Hi @k_2363, We cannot get the endpoint ApiKeys_CreateOrUpdateApiKey to get to work. It seems that the JSON requires ApiKeyTasks_Table (IEnumerable1)`. Unfortunately we cannot find what we have to provide here. If i look at the Stored Procedure, it seems that this cannot be filled with an API request. Hmm, it looks like you may not be able to use table-value parameters via JSON. I don't know how easy that will be to add support for; one option is just to just do direct INSERT statements into ApiKeys and ApiKeyTasks tables. I'm aware of at least one other user that does that, since it was significantly easier to do a single statement that joined on another table in another database on the same SQL Server. It's not ideal, but this is pretty rare use case. Would that work? Thanks, Steve