post https://sandbox.newline53.com/api/v1/returns
Initiate a Return of an ACH or wire payment. A full ACH addenda is not available for ACH returns because an addenda record is used for an ACH return; the addenda_info is the available remaining space in that record. Similarly, the wire_instruction provided here is limited to 70 characters because the instructions will be prefixed by Newline with the identifier (e.g IMAD) of the original wire transaction