eConnect error 475 - taRMTransaction

Terms Discount Taken Amount (DISTKNAM is not valid for Credit Memos and Returns (RMDTYPAL = 7 or RMDTYPAL =8).

Sometimes you will get this error when you are calling the eConnect method taRMTransaction to create returns (RMDTYPAL =8) or credit memos (RMDTYPAL =7)receivable transaction but you’re passing terms discount taken amount (DISTKNAM) in the  method taRMTransaction, the reason both credit memos and returns are credit documents and in the MS Dynamics GP terms discount not applicable for the credit documents, as solution if when you are creating returns / credit memos transaction don't pass value in PYMTRMID.