post https://sandbox.newline53.com/api/v1/returns
Initiates 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 the return itself; the addenda_info field contains the remaining available space.
For wire returns, the wire_instruction field is limited to 70 characters because Newline prefixes the instructions with the original wire transaction identifier (e.g., IMAD).