i guess i made it work by adding a generate flow file processor before the InvokeHTTP processor and passed grant_type attribute from GenerateFlow File to InvokeHttp and it worked. I just want to know is this the only approach. Why cant i define the grant_type=client_credentials and pass as a body attribute in the InvokeHttp processor itself and pass to the POST like i have shown in my original screenshot. Do i have to put the GenerateFlowFile first?  ... View more