Using the SSRS REST API , I can deploy a report from PowerShell in an automation pipeline.

But how do I use the API to wire it up to our predefined Shared DataSources?

The PUT Reports({Id})/DataSources endpoint doesn’t seem to be for Shared DataSources.

Gemini suggested PATCH /Reports({id})/Properties, which understandably gave 405 Method Not Allowed, and with PUT /Reports({id})/Properties I got 400 Bad Request