Google License API分配归档许可证时出现503 backendError问题排查

当前遇到以下错误：

Error managing archive license for xxxx@domain.com: <HttpError 503 when requesting https://licensing.googleapis.com/apps/licensing/v1/product/101034/sku/1010340001/user?alt=json returned "Backend Error". Details: "[{'message': 'Backend Error', 'domain': 'global', 'reason': 'backendError'}]">

该错误仅在尝试为用户分配Google Workspace归档用户许可证时出现。若为用户分配活跃许可证，代码可完美执行，无任何错误（尤其是此503 - 'backendError'）。我正在尝试自动撤销用户的活跃许可证并为其分配新的归档许可证。

这是Google的内部问题，还是我的代码块存在错误？

SKU_MAP_TO_ARCHIVE = {
    '1010020020': '1010340001' # Google Workspace Enterprise Plus -> Enterprise Plus - Archived User
}

ACTIVE_PRODUCT_ID = 'Google-Apps'

ARCHIVE_PRODUCT_ID = 101034

PRODUCT_IDS_TO_CHECK = list(set([ACTIVE_PRODUCT_ID]))

def change_user_license_to_archive(user_email, current_sku_id):
    """Changes a user's active license to an appropriate archive license."""

    credentials = service_account.Credentials.from_service_account_file(SERVICE_ACCOUNT_FILE, scopes=SCOPES, subject='xxxSuperADMIN@domain.com')

    licensing_service = build('licensing', 'v1', credentials=credentials)

    if not licensing_service:
        print(f"Error: Licensing API service could not be built for license change for {user_email}.")
        return False
    print("valid licenseing service")

    archive_sku_id = SKU_MAP_TO_ARCHIVE.get(current_sku_id)
    if not archive_sku_id:
        print(f"Error: No archive SKU mapped for current SKU ID {current_sku_id} for user {user_email}.")
        return False

    try:
        # Determine the correct product ID for deleting the current license
        # Most active Workspace licenses are under 'Google-Apps' product ID
        # If the current SKU ID is already an 'archived user' SKU, then use ARCHIVE_PRODUCT_ID (101034)
        delete_product_id = ACTIVE_PRODUCT_ID
        if current_sku_id in SKU_MAP_TO_ARCHIVE.values():
            delete_product_id = ARCHIVE_PRODUCT_ID

        print(f"Attempting to revoke active license ({current_sku_id}) for {user_email} (Product ID for deletion: {delete_product_id})...")
        licensing_service.licenseAssignments().delete(
            productId=delete_product_id,
            skuId=current_sku_id,
            userId=user_email
        ).execute()
        print(f"Successfully revoked active license for {user_email}.")

        # Assign the archive license
        print(f"Attempting to assign archive license ({archive_sku_id}) for {user_email} (Product ID for assignment: {ARCHIVE_PRODUCT_ID})...")
        licensing_service.licenseAssignments().insert(
            body={
                'userId': user_email,
            },
            productId=101034, 
            skuId=1010340001,   # archive sku id
        ).execute()
        print(f"Successfully assigned archive license for {user_email}.")
        return True

    except Exception as e:
        print(f"Error managing archive license for {user_email}: {e}")
        return False

我已尝试在HTTP请求中同时以字符串和整数形式传递productId和skuId，但在尝试为用户分配归档许可证时仍会收到503错误。想了解这是Google内部问题，还是我的环境中缺少某些配置。

内容的提问来源于stack exchange，提问作者Morgan Molyneaux