I had a look at the documentation of Postman titled “Authorizing requests | AWS Signature”:
From this doc I learned that Postman offers a UI that enables user to configure Postman so that it automatically transfer credential information from ~/.aws/credentials and ~/.aws/config files into the Request Header when WS.SendRequest() is executed.
I think Katalon Studio just lack the equivalent feature.
Now @amyradova has to write some custom Groovy code (an alternative to WS.SendRequest) to transfer the AWS credential from ~/.aws/cerendentails file info into a Request Header runtime.
Could you support @amyradova ?