In the Quick Response Code - Guidelines to Enable the Data Capture for the Initiation of a SEPA Credit Transfer
(https://www.europeanpaymentscouncil.eu/sites/default/files/kb/file/2024-03/EPC069-12%20v3.1%20Quick%20Response%20Code%20-%20Guidelines%20to%20Enable%20the%20Data%20Capture%20for%20the%20Initiation%20of%20an%20SCT.pdf)
The Amount is Optional for the field AT-T002 (be careful that the on the pdf document the field description starts at the end of page 3 of 5 and continue on page 4 of 5, the optional 'tag' is on the page 3 !)
Thanks for this very helpful library.