AP2 Mandate Extension - Payment Receipt

[yunlong-song-awx]

Hi UCP team. I see we have a great AP2 extension, which standardizes how mandates are generated, exchanged, and verified. But I also noticed that AP2 has another model called a payment receipt that should be generated by PSP and returned to the shopping agent. Do we plan to include that, or is it simply optional for AP2? Thanks in advance!

https://ap2-protocol.org/specification/#71-illustrative-transaction-flow