Authenticate in custom visual using a three-legged authentication token.

Hello Community,

I am currently working on a custom visual for Power BI that involves implementing three-legged authentication to connect with an external API. I have successfully set up the authentication flow, but I am encountering problems with the callback mechanism. Are there any specific considerations or configurations needed for the callback URL when working with Power BI custom visuals?

Any help or guidance would be greatly appreciated.

Anonymous GregHenry