delivery_type of same_business_day or next_business_day; receive incoming entries; cancel an outgoing entry while it is still cancellable; return incoming entries, reverse your own erroneous entries, and handle Notifications of Change. For outgoing ACH, Lead supports the CCD, PPD, TEL, WEB, and CIE SEC codes; incoming entries may additionally carry IAT for cross-border transactions; Lead does not originate outgoing IAT.
Sending your first ACH end-to-end is covered in Make Your First Payment API Call.
