diff --git a/services/git/src/stackit/git/__init__.py b/services/git/src/stackit/git/__init__.py
index 8f166806..6a47768c 100644
--- a/services/git/src/stackit/git/__init__.py
+++ b/services/git/src/stackit/git/__init__.py
@@ -12,35 +12,61 @@
     Generated by OpenAPI Generator (https://openapi-generator.tech)
 
     Do not edit the class manually.
-"""  # noqa: E501 docstring might be too long
+"""  # noqa: E501
 
 
 __version__ = "1.0.0"
 
+# Define package exports
+__all__ = [
+    "DefaultApi",
+    "ApiResponse",
+    "ApiClient",
+    "HostConfiguration",
+    "OpenApiException",
+    "ApiTypeError",
+    "ApiValueError",
+    "ApiKeyError",
+    "ApiAttributeError",
+    "ApiException",
+    "CreateInstancePayload",
+    "Flavor",
+    "GenericErrorResponse",
+    "Instance",
+    "InternalServerErrorResponse",
+    "ListFlavors",
+    "ListInstances",
+    "UnauthorizedResponse",
+]
+
 # import apis into sdk package
-from stackit.git.api.default_api import DefaultApi
-from stackit.git.api_client import ApiClient
+from stackit.git.api.default_api import DefaultApi as DefaultApi
+from stackit.git.api_client import ApiClient as ApiClient
 
 # import ApiClient
-from stackit.git.api_response import ApiResponse
-from stackit.git.configuration import HostConfiguration
-from stackit.git.exceptions import (
-    ApiAttributeError,
-    ApiException,
-    ApiKeyError,
-    ApiTypeError,
-    ApiValueError,
-    OpenApiException,
-)
+from stackit.git.api_response import ApiResponse as ApiResponse
+from stackit.git.configuration import HostConfiguration as HostConfiguration
+from stackit.git.exceptions import ApiAttributeError as ApiAttributeError
+from stackit.git.exceptions import ApiException as ApiException
+from stackit.git.exceptions import ApiKeyError as ApiKeyError
+from stackit.git.exceptions import ApiTypeError as ApiTypeError
+from stackit.git.exceptions import ApiValueError as ApiValueError
+from stackit.git.exceptions import OpenApiException as OpenApiException
 
 # import models into sdk package
-from stackit.git.models.create_instance_payload import CreateInstancePayload
-from stackit.git.models.flavor import Flavor
-from stackit.git.models.generic_error_response import GenericErrorResponse
-from stackit.git.models.instance import Instance
+from stackit.git.models.create_instance_payload import (
+    CreateInstancePayload as CreateInstancePayload,
+)
+from stackit.git.models.flavor import Flavor as Flavor
+from stackit.git.models.generic_error_response import (
+    GenericErrorResponse as GenericErrorResponse,
+)
+from stackit.git.models.instance import Instance as Instance
 from stackit.git.models.internal_server_error_response import (
-    InternalServerErrorResponse,
+    InternalServerErrorResponse as InternalServerErrorResponse,
+)
+from stackit.git.models.list_flavors import ListFlavors as ListFlavors
+from stackit.git.models.list_instances import ListInstances as ListInstances
+from stackit.git.models.unauthorized_response import (
+    UnauthorizedResponse as UnauthorizedResponse,
 )
-from stackit.git.models.list_flavors import ListFlavors
-from stackit.git.models.list_instances import ListInstances
-from stackit.git.models.unauthorized_response import UnauthorizedResponse
diff --git a/services/git/src/stackit/git/api/default_api.py b/services/git/src/stackit/git/api/default_api.py
index 80fdffec..ab0ea8bf 100644
--- a/services/git/src/stackit/git/api/default_api.py
+++ b/services/git/src/stackit/git/api/default_api.py
@@ -10,7 +10,7 @@
     Generated by OpenAPI Generator (https://openapi-generator.tech)
 
     Do not edit the class manually.
-"""  # noqa: E501 docstring might be too long
+"""  # noqa: E501
 
 from typing import Any, Dict, List, Optional, Tuple, Union
 
@@ -89,7 +89,7 @@ def create_instance(
                             in the spec for a single request.
         :type _host_index: int, optional
         :return: Returns the result object.
-        """  # noqa: E501 docstring might be too long
+        """  # noqa: E501
 
         _param = self._create_instance_serialize(
             project_id=project_id,
@@ -157,7 +157,7 @@ def create_instance_with_http_info(
                             in the spec for a single request.
         :type _host_index: int, optional
         :return: Returns the result object.
-        """  # noqa: E501 docstring might be too long
+        """  # noqa: E501
 
         _param = self._create_instance_serialize(
             project_id=project_id,
@@ -225,7 +225,7 @@ def create_instance_without_preload_content(
                             in the spec for a single request.
         :type _host_index: int, optional
         :return: Returns the result object.
-        """  # noqa: E501 docstring might be too long
+        """  # noqa: E501
 
         _param = self._create_instance_serialize(
             project_id=project_id,
@@ -264,7 +264,7 @@ def _create_instance_serialize(
         _query_params: List[Tuple[str, str]] = []
         _header_params: Dict[str, Optional[str]] = _headers or {}
         _form_params: List[Tuple[str, str]] = []
-        _files: Dict[str, Union[str, bytes]] = {}
+        _files: Dict[str, Union[str, bytes, List[str], List[bytes], List[Tuple[str, bytes]]]] = {}
         _body_params: Optional[bytes] = None
 
         # process the path parameters
@@ -352,7 +352,7 @@ def delete_instance(
                             in the spec for a single request.
         :type _host_index: int, optional
         :return: Returns the result object.
-        """  # noqa: E501 docstring might be too long
+        """  # noqa: E501
 
         _param = self._delete_instance_serialize(
             project_id=project_id,
@@ -423,7 +423,7 @@ def delete_instance_with_http_info(
                             in the spec for a single request.
         :type _host_index: int, optional
         :return: Returns the result object.
-        """  # noqa: E501 docstring might be too long
+        """  # noqa: E501
 
         _param = self._delete_instance_serialize(
             project_id=project_id,
@@ -494,7 +494,7 @@ def delete_instance_without_preload_content(
                             in the spec for a single request.
         :type _host_index: int, optional
         :return: Returns the result object.
-        """  # noqa: E501 docstring might be too long
+        """  # noqa: E501
 
         _param = self._delete_instance_serialize(
             project_id=project_id,
@@ -534,7 +534,7 @@ def _delete_instance_serialize(
         _query_params: List[Tuple[str, str]] = []
         _header_params: Dict[str, Optional[str]] = _headers or {}
         _form_params: List[Tuple[str, str]] = []
-        _files: Dict[str, Union[str, bytes]] = {}
+        _files: Dict[str, Union[str, bytes, List[str], List[bytes], List[Tuple[str, bytes]]]] = {}
         _body_params: Optional[bytes] = None
 
         # process the path parameters
@@ -614,7 +614,7 @@ def get_instance(
                             in the spec for a single request.
         :type _host_index: int, optional
         :return: Returns the result object.
-        """  # noqa: E501 docstring might be too long
+        """  # noqa: E501
 
         _param = self._get_instance_serialize(
             project_id=project_id,
@@ -684,7 +684,7 @@ def get_instance_with_http_info(
                             in the spec for a single request.
         :type _host_index: int, optional
         :return: Returns the result object.
-        """  # noqa: E501 docstring might be too long
+        """  # noqa: E501
 
         _param = self._get_instance_serialize(
             project_id=project_id,
@@ -754,7 +754,7 @@ def get_instance_without_preload_content(
                             in the spec for a single request.
         :type _host_index: int, optional
         :return: Returns the result object.
-        """  # noqa: E501 docstring might be too long
+        """  # noqa: E501
 
         _param = self._get_instance_serialize(
             project_id=project_id,
@@ -793,7 +793,7 @@ def _get_instance_serialize(
         _query_params: List[Tuple[str, str]] = []
         _header_params: Dict[str, Optional[str]] = _headers or {}
         _form_params: List[Tuple[str, str]] = []
-        _files: Dict[str, Union[str, bytes]] = {}
+        _files: Dict[str, Union[str, bytes, List[str], List[bytes], List[Tuple[str, bytes]]]] = {}
         _body_params: Optional[bytes] = None
 
         # process the path parameters
@@ -831,14 +831,7 @@ def _get_instance_serialize(
     @validate_call
     def list_flavors(
         self,
-        project_id: Annotated[
-            str,
-            Field(
-                strict=True,
-                max_length=36,
-                description="The STACKIT portal project UUID the STACKIT Git instance is part of.",
-            ),
-        ],
+        project_id: Annotated[str, Field(min_length=36, strict=True, max_length=36, description="Project identifier.")],
         _request_timeout: Union[
             None,
             Annotated[StrictFloat, Field(gt=0)],
@@ -853,7 +846,7 @@ def list_flavors(
 
         Provides detailed information about possible Git Flavors.
 
-        :param project_id: The STACKIT portal project UUID the STACKIT Git instance is part of. (required)
+        :param project_id: Project identifier. (required)
         :type project_id: str
         :param _request_timeout: timeout setting for this request. If one
                                  number provided, it will be total request
@@ -875,7 +868,7 @@ def list_flavors(
                             in the spec for a single request.
         :type _host_index: int, optional
         :return: Returns the result object.
-        """  # noqa: E501 docstring might be too long
+        """  # noqa: E501
 
         _param = self._list_flavors_serialize(
             project_id=project_id,
@@ -887,10 +880,10 @@ def list_flavors(
 
         _response_types_map: Dict[str, Optional[str]] = {
             "200": "ListFlavors",
-            "400": None,
+            "400": "GenericErrorResponse",
             "401": "UnauthorizedResponse",
             "404": None,
-            "500": "InternalServerErrorResponse",
+            "500": "GenericErrorResponse",
         }
         response_data = self.api_client.call_api(*_param, _request_timeout=_request_timeout)
         response_data.read()
@@ -902,14 +895,7 @@ def list_flavors(
     @validate_call
     def list_flavors_with_http_info(
         self,
-        project_id: Annotated[
-            str,
-            Field(
-                strict=True,
-                max_length=36,
-                description="The STACKIT portal project UUID the STACKIT Git instance is part of.",
-            ),
-        ],
+        project_id: Annotated[str, Field(min_length=36, strict=True, max_length=36, description="Project identifier.")],
         _request_timeout: Union[
             None,
             Annotated[StrictFloat, Field(gt=0)],
@@ -924,7 +910,7 @@ def list_flavors_with_http_info(
 
         Provides detailed information about possible Git Flavors.
 
-        :param project_id: The STACKIT portal project UUID the STACKIT Git instance is part of. (required)
+        :param project_id: Project identifier. (required)
         :type project_id: str
         :param _request_timeout: timeout setting for this request. If one
                                  number provided, it will be total request
@@ -946,7 +932,7 @@ def list_flavors_with_http_info(
                             in the spec for a single request.
         :type _host_index: int, optional
         :return: Returns the result object.
-        """  # noqa: E501 docstring might be too long
+        """  # noqa: E501
 
         _param = self._list_flavors_serialize(
             project_id=project_id,
@@ -958,10 +944,10 @@ def list_flavors_with_http_info(
 
         _response_types_map: Dict[str, Optional[str]] = {
             "200": "ListFlavors",
-            "400": None,
+            "400": "GenericErrorResponse",
             "401": "UnauthorizedResponse",
             "404": None,
-            "500": "InternalServerErrorResponse",
+            "500": "GenericErrorResponse",
         }
         response_data = self.api_client.call_api(*_param, _request_timeout=_request_timeout)
         response_data.read()
@@ -973,14 +959,7 @@ def list_flavors_with_http_info(
     @validate_call
     def list_flavors_without_preload_content(
         self,
-        project_id: Annotated[
-            str,
-            Field(
-                strict=True,
-                max_length=36,
-                description="The STACKIT portal project UUID the STACKIT Git instance is part of.",
-            ),
-        ],
+        project_id: Annotated[str, Field(min_length=36, strict=True, max_length=36, description="Project identifier.")],
         _request_timeout: Union[
             None,
             Annotated[StrictFloat, Field(gt=0)],
@@ -995,7 +974,7 @@ def list_flavors_without_preload_content(
 
         Provides detailed information about possible Git Flavors.
 
-        :param project_id: The STACKIT portal project UUID the STACKIT Git instance is part of. (required)
+        :param project_id: Project identifier. (required)
         :type project_id: str
         :param _request_timeout: timeout setting for this request. If one
                                  number provided, it will be total request
@@ -1017,7 +996,7 @@ def list_flavors_without_preload_content(
                             in the spec for a single request.
         :type _host_index: int, optional
         :return: Returns the result object.
-        """  # noqa: E501 docstring might be too long
+        """  # noqa: E501
 
         _param = self._list_flavors_serialize(
             project_id=project_id,
@@ -1029,10 +1008,10 @@ def list_flavors_without_preload_content(
 
         _response_types_map: Dict[str, Optional[str]] = {
             "200": "ListFlavors",
-            "400": None,
+            "400": "GenericErrorResponse",
             "401": "UnauthorizedResponse",
             "404": None,
-            "500": "InternalServerErrorResponse",
+            "500": "GenericErrorResponse",
         }
         response_data = self.api_client.call_api(*_param, _request_timeout=_request_timeout)
         return response_data.response
@@ -1054,7 +1033,7 @@ def _list_flavors_serialize(
         _query_params: List[Tuple[str, str]] = []
         _header_params: Dict[str, Optional[str]] = _headers or {}
         _form_params: List[Tuple[str, str]] = []
-        _files: Dict[str, Union[str, bytes]] = {}
+        _files: Dict[str, Union[str, bytes, List[str], List[bytes], List[Tuple[str, bytes]]]] = {}
         _body_params: Optional[bytes] = None
 
         # process the path parameters
@@ -1127,7 +1106,7 @@ def list_instances(
                             in the spec for a single request.
         :type _host_index: int, optional
         :return: Returns the result object.
-        """  # noqa: E501 docstring might be too long
+        """  # noqa: E501
 
         _param = self._list_instances_serialize(
             project_id=project_id,
@@ -1190,7 +1169,7 @@ def list_instances_with_http_info(
                             in the spec for a single request.
         :type _host_index: int, optional
         :return: Returns the result object.
-        """  # noqa: E501 docstring might be too long
+        """  # noqa: E501
 
         _param = self._list_instances_serialize(
             project_id=project_id,
@@ -1253,7 +1232,7 @@ def list_instances_without_preload_content(
                             in the spec for a single request.
         :type _host_index: int, optional
         :return: Returns the result object.
-        """  # noqa: E501 docstring might be too long
+        """  # noqa: E501
 
         _param = self._list_instances_serialize(
             project_id=project_id,
@@ -1289,7 +1268,7 @@ def _list_instances_serialize(
         _query_params: List[Tuple[str, str]] = []
         _header_params: Dict[str, Optional[str]] = _headers or {}
         _form_params: List[Tuple[str, str]] = []
-        _files: Dict[str, Union[str, bytes]] = {}
+        _files: Dict[str, Union[str, bytes, List[str], List[bytes], List[Tuple[str, bytes]]]] = {}
         _body_params: Optional[bytes] = None
 
         # process the path parameters
diff --git a/services/git/src/stackit/git/api_client.py b/services/git/src/stackit/git/api_client.py
index 59ef9b98..8ca96a1e 100644
--- a/services/git/src/stackit/git/api_client.py
+++ b/services/git/src/stackit/git/api_client.py
@@ -10,7 +10,7 @@
     Generated by OpenAPI Generator (https://openapi-generator.tech)
 
     Do not edit the class manually.
-"""  # noqa: E501 docstring might be too long
+"""  # noqa: E501
 
 import datetime
 import json
@@ -332,6 +332,10 @@ def sanitize_for_serialization(self, obj):
             else:
                 obj_dict = obj.__dict__
 
+        if isinstance(obj_dict, list):
+            # here we handle instances that can either be a list or something else, and only became a real list by calling to_dict() # noqa: E501
+            return self.sanitize_for_serialization(obj_dict)
+
         return {key: self.sanitize_for_serialization(val) for key, val in obj_dict.items()}
 
     def deserialize(self, response_text: str, response_type: str, content_type: Optional[str]):
@@ -351,12 +355,12 @@ def deserialize(self, response_text: str, response_type: str, content_type: Opti
                 data = json.loads(response_text)
             except ValueError:
                 data = response_text
-        elif content_type.startswith("application/json"):
+        elif re.match(r"^application/(json|[\w!#$&.+-^_]+\+json)\s*(;|$)", content_type, re.IGNORECASE):
             if response_text == "":
                 data = ""
             else:
                 data = json.loads(response_text)
-        elif content_type.startswith("text/plain"):
+        elif re.match(r"^text\/[a-z.+-]+\s*(;|$)", content_type, re.IGNORECASE):
             data = response_text
         else:
             raise ApiException(status=0, reason="Unsupported content type: {0}".format(content_type))
@@ -458,7 +462,7 @@ def parameters_to_url_query(self, params, collection_formats):
             if k in collection_formats:
                 collection_format = collection_formats[k]
                 if collection_format == "multi":
-                    new_params.extend((k, str(value)) for value in v)
+                    new_params.extend((k, quote(str(value))) for value in v)
                 else:
                     if collection_format == "ssv":
                         delimiter = " "
@@ -474,7 +478,10 @@ def parameters_to_url_query(self, params, collection_formats):
 
         return "&".join(["=".join(map(str, item)) for item in new_params])
 
-    def files_parameters(self, files: Dict[str, Union[str, bytes]]):
+    def files_parameters(
+        self,
+        files: Dict[str, Union[str, bytes, List[str], List[bytes], Tuple[str, bytes]]],
+    ):
         """Builds form parameters.
 
         :param files: File parameters.
@@ -489,6 +496,12 @@ def files_parameters(self, files: Dict[str, Union[str, bytes]]):
             elif isinstance(v, bytes):
                 filename = k
                 filedata = v
+            elif isinstance(v, tuple):
+                filename, filedata = v
+            elif isinstance(v, list):
+                for file_param in v:
+                    params.extend(self.files_parameters({k: file_param}))
+                continue
             else:
                 raise ValueError("Unsupported file value")
             mimetype = mimetypes.guess_type(filename)[0] or "application/octet-stream"
diff --git a/services/git/src/stackit/git/configuration.py b/services/git/src/stackit/git/configuration.py
index a4b58c22..f46e9af9 100644
--- a/services/git/src/stackit/git/configuration.py
+++ b/services/git/src/stackit/git/configuration.py
@@ -1,10 +1,5 @@
 # coding: utf-8
 
-import sys
-
-import os
-
-
 """
     STACKIT Git API
 
@@ -15,7 +10,29 @@
     Generated by OpenAPI Generator (https://openapi-generator.tech)
 
     Do not edit the class manually.
-"""  # noqa: E501 docstring might be too long
+"""  # noqa: E501
+
+import sys
+from typing import Dict, List, Optional, TypedDict
+
+from typing_extensions import NotRequired
+
+import os
+
+
+ServerVariablesT = Dict[str, str]
+
+
+class HostSettingVariable(TypedDict):
+    description: str
+    default_value: str
+    enum_values: List[str]
+
+
+class HostSetting(TypedDict):
+    url: str
+    description: str
+    variables: NotRequired[Dict[str, HostSettingVariable]]
 
 
 class HostConfiguration:
@@ -54,7 +71,7 @@ def __init__(
         """Ignore operation servers
         """
 
-    def get_host_settings(self):
+    def get_host_settings(self) -> List[HostSetting]:
         """Gets an array of host settings
 
         :return: An array of host settings
@@ -72,7 +89,12 @@ def get_host_settings(self):
             }
         ]
 
-    def get_host_from_settings(self, index, variables=None, servers=None):
+    def get_host_from_settings(
+        self,
+        index: Optional[int],
+        variables: Optional[ServerVariablesT] = None,
+        servers: Optional[List[HostSetting]] = None,
+    ) -> str:
         """Gets host URL based on the index and variables
         :param index: array index of the host settings
         :param variables: hash of variable and the corresponding value
@@ -112,7 +134,7 @@ def get_host_from_settings(self, index, variables=None, servers=None):
                 and variables.get(variable_name) is not None
             ):
                 raise ValueError(
-                    "this API does not support setting a region in the the client configuration, "
+                    "this API does not support setting a region in the client configuration, "
                     "please check if the region can be specified as a function parameter"
                 )
             used_value = variables.get(variable_name, variable["default_value"])
@@ -131,12 +153,12 @@ def get_host_from_settings(self, index, variables=None, servers=None):
         return url
 
     @property
-    def host(self):
+    def host(self) -> str:
         """Return generated host."""
         return self.get_host_from_settings(self.server_index, variables=self.server_variables)
 
     @host.setter
-    def host(self, value):
+    def host(self, value: str) -> None:
         """Fix base path."""
         self._base_path = value
         self.server_index = None
diff --git a/services/git/src/stackit/git/exceptions.py b/services/git/src/stackit/git/exceptions.py
index 38d6acf3..6173d7dc 100644
--- a/services/git/src/stackit/git/exceptions.py
+++ b/services/git/src/stackit/git/exceptions.py
@@ -10,7 +10,7 @@
     Generated by OpenAPI Generator (https://openapi-generator.tech)
 
     Do not edit the class manually.
-"""  # noqa: E501 docstring might be too long
+"""  # noqa: E501
 
 from typing import Any, Optional
 
@@ -152,6 +152,13 @@ def from_response(
         if http_resp.status == 404:
             raise NotFoundException(http_resp=http_resp, body=body, data=data)
 
+        # Added new conditions for 409 and 422
+        if http_resp.status == 409:
+            raise ConflictException(http_resp=http_resp, body=body, data=data)
+
+        if http_resp.status == 422:
+            raise UnprocessableEntityException(http_resp=http_resp, body=body, data=data)
+
         if 500 <= http_resp.status <= 599:
             raise ServiceException(http_resp=http_resp, body=body, data=data)
         raise ApiException(http_resp=http_resp, body=body, data=data)
@@ -188,6 +195,18 @@ class ServiceException(ApiException):
     pass
 
 
+class ConflictException(ApiException):
+    """Exception for HTTP 409 Conflict."""
+
+    pass
+
+
+class UnprocessableEntityException(ApiException):
+    """Exception for HTTP 422 Unprocessable Entity."""
+
+    pass
+
+
 def render_path(path_to_item):
     """Returns a string representation of a path"""
     result = ""
diff --git a/services/git/src/stackit/git/models/__init__.py b/services/git/src/stackit/git/models/__init__.py
index 66afcf29..36c3a8cb 100644
--- a/services/git/src/stackit/git/models/__init__.py
+++ b/services/git/src/stackit/git/models/__init__.py
@@ -11,7 +11,7 @@
     Generated by OpenAPI Generator (https://openapi-generator.tech)
 
     Do not edit the class manually.
-"""  # noqa: E501 docstring might be too long
+"""  # noqa: E501
 
 
 # import models into model package
diff --git a/services/git/src/stackit/git/models/create_instance_payload.py b/services/git/src/stackit/git/models/create_instance_payload.py
index ab930f32..0c266f78 100644
--- a/services/git/src/stackit/git/models/create_instance_payload.py
+++ b/services/git/src/stackit/git/models/create_instance_payload.py
@@ -10,13 +10,13 @@
     Generated by OpenAPI Generator (https://openapi-generator.tech)
 
     Do not edit the class manually.
-"""  # noqa: E501 docstring might be too long
+"""  # noqa: E501
 
 from __future__ import annotations
 
 import json
 import pprint
-import re
+import re  # noqa: F401
 from typing import Any, ClassVar, Dict, List, Optional, Set
 
 from pydantic import BaseModel, ConfigDict, Field, StrictStr, field_validator
@@ -25,20 +25,30 @@
 
 class CreateInstancePayload(BaseModel):
     """
-    Instance creation configuration options.
-    """
+    Request a STACKIT Git instance to be created with these properties.
+    """  # noqa: E501
 
     acl: Optional[Annotated[List[StrictStr], Field(max_length=5)]] = Field(
         default=None, description="Restricted ACL for instance access."
     )
-    flavor: Optional[StrictStr] = Field(
-        default="git-100", description="Instance flavor. Defaults to git-100 if not specified."
+    flavor: Optional[Annotated[str, Field(strict=True, max_length=255)]] = Field(
+        default=None, description="Desired instance flavor. Must be one of the defined enum values"
     )
     name: Annotated[str, Field(min_length=5, strict=True, max_length=32)] = Field(
         description="A user chosen name to distinguish multiple STACKIT Git instances."
     )
     __properties: ClassVar[List[str]] = ["acl", "flavor", "name"]
 
+    @field_validator("flavor")
+    def flavor_validate_enum(cls, value):
+        """Validates the enum"""
+        if value is None:
+            return value
+
+        if value not in set(["git-10", "git-100"]):
+            raise ValueError("must be one of enum values ('git-10', 'git-100')")
+        return value
+
     @field_validator("name")
     def name_validate_regular_expression(cls, value):
         """Validates the regular expression"""
@@ -94,11 +104,5 @@ def from_dict(cls, obj: Optional[Dict[str, Any]]) -> Optional[Self]:
         if not isinstance(obj, dict):
             return cls.model_validate(obj)
 
-        _obj = cls.model_validate(
-            {
-                "acl": obj.get("acl"),
-                "flavor": obj.get("flavor") if obj.get("flavor") is not None else "git-100",
-                "name": obj.get("name"),
-            }
-        )
+        _obj = cls.model_validate({"acl": obj.get("acl"), "flavor": obj.get("flavor"), "name": obj.get("name")})
         return _obj
diff --git a/services/git/src/stackit/git/models/flavor.py b/services/git/src/stackit/git/models/flavor.py
index 5475660f..80fc07a6 100644
--- a/services/git/src/stackit/git/models/flavor.py
+++ b/services/git/src/stackit/git/models/flavor.py
@@ -10,7 +10,7 @@
     Generated by OpenAPI Generator (https://openapi-generator.tech)
 
     Do not edit the class manually.
-"""  # noqa: E501 docstring might be too long
+"""  # noqa: E501
 
 from __future__ import annotations
 
@@ -25,13 +25,14 @@
 class Flavor(BaseModel):
     """
     Describes a STACKIT Git Flavor.
-    """
+    """  # noqa: E501
 
     availability: StrictStr = Field(description="Defines the flavor availability.")
     description: StrictStr = Field(description="Flavor description.")
     display_name: StrictStr = Field(description="The display name that will be shown in the Portal.")
     id: Annotated[str, Field(strict=True, max_length=36)] = Field(description="Flavor id.")
-    __properties: ClassVar[List[str]] = ["availability", "description", "display_name", "id"]
+    sku: StrictStr = Field(description="SAP article number.")
+    __properties: ClassVar[List[str]] = ["availability", "description", "display_name", "id", "sku"]
 
     @field_validator("availability")
     def availability_validate_enum(cls, value):
@@ -94,6 +95,7 @@ def from_dict(cls, obj: Optional[Dict[str, Any]]) -> Optional[Self]:
                 "description": obj.get("description"),
                 "display_name": obj.get("display_name"),
                 "id": obj.get("id"),
+                "sku": obj.get("sku"),
             }
         )
         return _obj
diff --git a/services/git/src/stackit/git/models/generic_error_response.py b/services/git/src/stackit/git/models/generic_error_response.py
index 36ffb1b6..945532c5 100644
--- a/services/git/src/stackit/git/models/generic_error_response.py
+++ b/services/git/src/stackit/git/models/generic_error_response.py
@@ -10,7 +10,7 @@
     Generated by OpenAPI Generator (https://openapi-generator.tech)
 
     Do not edit the class manually.
-"""  # noqa: E501 docstring might be too long
+"""  # noqa: E501
 
 from __future__ import annotations
 
@@ -25,7 +25,7 @@
 class GenericErrorResponse(BaseModel):
     """
     Generic Error Response.
-    """
+    """  # noqa: E501
 
     details: Optional[List[StrictStr]] = None
     message: StrictStr
diff --git a/services/git/src/stackit/git/models/instance.py b/services/git/src/stackit/git/models/instance.py
index aeabd26e..2d71925e 100644
--- a/services/git/src/stackit/git/models/instance.py
+++ b/services/git/src/stackit/git/models/instance.py
@@ -10,13 +10,12 @@
     Generated by OpenAPI Generator (https://openapi-generator.tech)
 
     Do not edit the class manually.
-"""  # noqa: E501 docstring might be too long
+"""  # noqa: E501
 
 from __future__ import annotations
 
 import json
 import pprint
-import re
 from datetime import datetime
 from typing import Any, ClassVar, Dict, List, Optional, Set
 
@@ -26,21 +25,29 @@
 
 class Instance(BaseModel):
     """
-    Information about an Instance.
-    """
+    Describes a STACKIT Git instance.
+    """  # noqa: E501
 
     acl: List[StrictStr] = Field(description="Restricted ACL for instance access.")
     consumed_disk: StrictStr = Field(description="How many bytes of disk space is consumed. Read Only.")
     consumed_object_storage: StrictStr = Field(description="How many bytes of Object Storage is consumed. Read Only.")
-    created: datetime = Field(description="Instance creation timestamp in RFC3339 format.")
-    flavor: StrictStr = Field(description="Instance flavor.")
-    id: Annotated[str, Field(min_length=36, strict=True, max_length=36)] = Field(description="Instance identifier.")
-    name: Annotated[str, Field(strict=True, max_length=32)] = Field(description="Instance name.")
+    created: datetime = Field(description="The date and time the creation of the STACKIT Git instance was triggered.")
+    flavor: StrictStr = Field(description="Desired instance flavor. Must be one of the defined enum values")
+    id: Annotated[str, Field(strict=True, max_length=36)] = Field(
+        description="A auto generated unique id which identifies the STACKIT Git instances."
+    )
+    name: Annotated[str, Field(strict=True, max_length=32)] = Field(
+        description="A user chosen name to distinguish multiple STACKIT Git instances."
+    )
     state: Annotated[str, Field(strict=True, max_length=32)] = Field(
-        description="Indicate the readiness state of the instance."
+        description="The current state of the STACKIT Git instance."
+    )
+    url: Annotated[str, Field(strict=True, max_length=2048)] = Field(
+        description="The URL for reaching the STACKIT Git instance."
+    )
+    version: Annotated[str, Field(strict=True, max_length=20)] = Field(
+        description="The current version of STACKIT Git deployed to the instance."
     )
-    url: Annotated[str, Field(strict=True, max_length=512)] = Field(description="Instance url.")
-    version: Annotated[str, Field(strict=True, max_length=20)] = Field(description="STACKIT Git version indicator.")
     __properties: ClassVar[List[str]] = [
         "acl",
         "consumed_disk",
@@ -54,15 +61,6 @@ class Instance(BaseModel):
         "version",
     ]
 
-    @field_validator("id")
-    def id_validate_regular_expression(cls, value):
-        """Validates the regular expression"""
-        if not re.match(r"^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$", value):
-            raise ValueError(
-                r"must validate the regular expression /^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/"
-            )
-        return value
-
     @field_validator("state")
     def state_validate_enum(cls, value):
         """Validates the enum"""
diff --git a/services/git/src/stackit/git/models/internal_server_error_response.py b/services/git/src/stackit/git/models/internal_server_error_response.py
index 0789f80c..8e3784f7 100644
--- a/services/git/src/stackit/git/models/internal_server_error_response.py
+++ b/services/git/src/stackit/git/models/internal_server_error_response.py
@@ -10,7 +10,7 @@
     Generated by OpenAPI Generator (https://openapi-generator.tech)
 
     Do not edit the class manually.
-"""  # noqa: E501 docstring might be too long
+"""  # noqa: E501
 
 from __future__ import annotations
 
@@ -25,7 +25,7 @@
 class InternalServerErrorResponse(BaseModel):
     """
     Internal server error.
-    """
+    """  # noqa: E501
 
     error: Optional[StrictStr] = None
     __properties: ClassVar[List[str]] = ["error"]
diff --git a/services/git/src/stackit/git/models/list_flavors.py b/services/git/src/stackit/git/models/list_flavors.py
index 1d2fb2d8..22ba5e1c 100644
--- a/services/git/src/stackit/git/models/list_flavors.py
+++ b/services/git/src/stackit/git/models/list_flavors.py
@@ -10,7 +10,7 @@
     Generated by OpenAPI Generator (https://openapi-generator.tech)
 
     Do not edit the class manually.
-"""  # noqa: E501 docstring might be too long
+"""  # noqa: E501
 
 from __future__ import annotations
 
@@ -27,7 +27,7 @@
 class ListFlavors(BaseModel):
     """
     A list of STACKIT Git flavors.
-    """
+    """  # noqa: E501
 
     flavors: List[Flavor]
     __properties: ClassVar[List[str]] = ["flavors"]
diff --git a/services/git/src/stackit/git/models/list_instances.py b/services/git/src/stackit/git/models/list_instances.py
index f4afc5bf..2f48730b 100644
--- a/services/git/src/stackit/git/models/list_instances.py
+++ b/services/git/src/stackit/git/models/list_instances.py
@@ -10,7 +10,7 @@
     Generated by OpenAPI Generator (https://openapi-generator.tech)
 
     Do not edit the class manually.
-"""  # noqa: E501 docstring might be too long
+"""  # noqa: E501
 
 from __future__ import annotations
 
@@ -26,10 +26,10 @@
 
 class ListInstances(BaseModel):
     """
-    List of Instances.
-    """
+    A list of STACKIT Git instances.
+    """  # noqa: E501
 
-    instances: Annotated[List[Instance], Field(max_length=100)]
+    instances: Annotated[List[Instance], Field(max_length=50)]
     __properties: ClassVar[List[str]] = ["instances"]
 
     model_config = ConfigDict(
diff --git a/services/git/src/stackit/git/models/unauthorized_response.py b/services/git/src/stackit/git/models/unauthorized_response.py
index caeb666d..40b83963 100644
--- a/services/git/src/stackit/git/models/unauthorized_response.py
+++ b/services/git/src/stackit/git/models/unauthorized_response.py
@@ -10,7 +10,7 @@
     Generated by OpenAPI Generator (https://openapi-generator.tech)
 
     Do not edit the class manually.
-"""  # noqa: E501 docstring might be too long
+"""  # noqa: E501
 
 from __future__ import annotations
 
@@ -25,7 +25,7 @@
 class UnauthorizedResponse(BaseModel):
     """
     The request could not be authorized.
-    """
+    """  # noqa: E501
 
     error: Optional[StrictStr] = None
     __properties: ClassVar[List[str]] = ["error"]
diff --git a/services/git/src/stackit/git/rest.py b/services/git/src/stackit/git/rest.py
index 6d2aaf59..bcf1f39f 100644
--- a/services/git/src/stackit/git/rest.py
+++ b/services/git/src/stackit/git/rest.py
@@ -10,7 +10,7 @@
     Generated by OpenAPI Generator (https://openapi-generator.tech)
 
     Do not edit the class manually.
-"""  # noqa: E501 docstring might be too long
+"""  # noqa: E501
 
 import io
 import json
@@ -125,7 +125,7 @@ def request(self, method, url, headers=None, body=None, post_params=None, _reque
                         data=body,
                         headers=headers,
                     )
-                elif headers["Content-Type"] == "text/plain" and isinstance(body, bool):
+                elif headers["Content-Type"].startswith("text/") and isinstance(body, bool):
                     request_body = "true" if body else "false"
                     r = self.session.request(method, url, data=request_body, headers=headers)
                 else: