Signature Mismatch - POST API not working - works in Postman and API connector

Need help APIs
1

Hi All,

I have an issue where a POST call is working in Postman and when I initialize the API call in API connector, but when I make the call in the app, I get a 401 error, signature mismatch. The request body is encoded as part of the call and therefore I believe the request body that is actually sent is not the same as what is in Postman and the API connector.

Any ideas?

Thanks