You followed the procedure as described in Using Platform APIs to obtain an access token to call the platform API methods for SAP BTP, Neo Environment in Postman, and encountered error "unauthorized_client" as below:
"Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental."
SAP Business Technology Platform
401, "unauthorized_client", "error": "unauthorized_client", Platform APIs, OAuth Client, OAuth Access Token, Post, /oauth2/apitoken/v1?grant_type=client_credentials , KBA , BC-NEO-SEC-IAM , Authentication, Authorization(Cloud Platform Neo) , Known Error
About this pageThis is a preview of a SAP Knowledge Base Article. Click more to access the full version on SAP for Me (Login required).
Search for additional results
Visit SAP Support Portal's SAP Notes and KBA Search.