I have a problem sending IAD format 2 with biometric authentication. I work with a payment terminal and he only accept my IAD when his size is under 23 bytes (like a format 1 IAD) and I don't find where I can specify the format version.
Thank you
From Visa online ( you need to have access ), download Visa Contactless Payment Specification (VCPS) Visa Supplemental Requirements
and refer section. M Issuer Application Data (IAD) and Card Verification Results (CVR) Formats