[Python] Error 400: "Bad Request" When Importing GitLab Repository into Azure DevOps via REST...

I am trying to import a GitLab repository into Azure DevOps using the REST API. However, I am encountering a 400 Bad Request error during the process. Below is the core part of the code:

python code:

repo_details = get_azure_repo(
context=context,
repo_name=ADO_REPO_NAME,
project_name=PROJECT_NAME
)

# Prepare import request
import_url = f"https://dev.azure.com/{ORGANIZATION_NAME}/{PROJECT_NAME}/_apis/git/repositories/{ADO_REPO_NAME}/importRequests?api-version=7.1-preview.1"

import_payload = {
"parameters": {
"gitSource": {
"url": GITLAB_REPO_URL,
"overwrite": False,
"username": "oauth2",
"password": "GITLAB_PERSONAL_ACCESS_TOKEN" # Placeholder for GitLab PAT
},
"serviceEndpointId": None,
"deleteServiceEndpointAfterImportIsDone": True
}
}

headers = {
"Content-Type": "application/json"
}

# Perform repository import
import_response = requests.post(
import_url,
auth=HTTPBasicAuth("", AZURE_DEVOPS_PAT), # Placeholder for Azure DevOps PAT
headers=headers,
data=json.dumps(import_payload),
verify=False
)


Error:

400 Client Error: Bad Request for url: https://dev.azure.com//<project_name>/_apis/git/repositories/<repo_name>/importRequests?api-version=7.1-preview.1

Things I've Tried:

The GitLab repository URL (GITLAB_REPO_URL) is correct and publicly accessible. The Azure DevOps Personal Access Token (AZURE_DEVOPS_PAT) has full permissions for repository imports and related operations. The repository name (ADO_REPO_NAME) and project name (PROJECT_NAME) exist and are accessible in Azure DevOps. The GITLAB_REPO_URL is in the format: https://gitlab.example.com//.git. I am using the appropriate API version (7.1-preview.1) as per Microsoft's documentation.

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