eConnect error 474 - taRMTransaction

Payment Terms (PYMTRMID) are not allowed on Returns (RMDTYPAL = 8) .

Sometimes you will get this error when you are calling the eConnect method taRMTransaction to create returns receivable transaction but you’re passing payment terms , actually the returns are credit document and the payment terms applicable only for the debit document. in receivable transaction entry window of MS Dynamics GP when user select document type as Returns system by default will disable the payment terms field, lockup and expansion button to stop the user from adding the payment terms, same validation has been build in the eConnect and because of that system throwing this error "Payment Terms (PYMTRMID) are not allowed on Returns (RMDTYPAL = 8) " so as solution if when you are creating returns transaction don't pass value in PYMTRMID.