Power BI REST API "Try It" no longer allows inputs to be passed

Hi Tobiasz ,

I did not find a clearly posted “Power BI Known Issues” public page that lists this specific UI regression in the 'Try It' UI for the REST API documentation.

please consider raising a support ticket for further assistance. To raise a support ticket for Fabric and Power BI, kindly follow the steps outlined in the following guide:

How to create a Fabric and Power BI Support ticket - Power BI | Microsoft Learn

Workaround:
as of now we advise to try the APIs using any external API testing tools. For example : Postman

additionally please refer to below:

https://learn.microsoft.com/en-us/power-bi/developer/embedded/troubleshoot-rest-api

Thanks,

Prashanth

MS Fabric community support