Hello @Philippe Perles ,
Welcome to the Microsoft Q&A platform.
Azure Partner solutions is currently not supported in the Q&A forums, the supported products are listed over here https://learn.microsoft.com/en-us/answers/products (more to be added later on).
You will receive this error message, when you haven't provided the required details while creating the datadog.
To set up the Azure Datadog integration, ensure you have the appropriate access before starting the setup.
For more details, refer to QuickStart: Get started with Datadog.
If the above options don't solve the problem, contact Datadog support.
Hope this helps. Do let us know if you any further queries.
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