Are you planning on generating all (or a subset) of 20022 messages? That’s what we did for our Go package using 20022 for RTP. We added helpers for generating IDs and the signature sign/validate.
Hi Adam, thanks for asking. Eventually, this library should be extensible to generate all types of ISO20022 messages, but I'm starting out with PAIN (Payment Initation!) messages. Would be super keen to add RTP - will reach out to you!