9F72

Protected Data Envelope 3 continues the same write-protected envelope family as 9F71 and 9F74, both covered in this dictionary, sharing the identical design: card-controlled write access, freely readable content, and a payload that's scheme- or issuer-specific rather than defined by core EMV. Related to 9F71 as its numbered neighbour in the same sequence, its practical handling is identical to every other member of the protected-envelope family - a terminal shouldn't assume any particular protected envelope number carries any particular kind of data without consulting the relevant scheme's own documentation, since the numbering itself is purely positional within Kernel 2's data-storage feature, not semantically meaningful across different issuers or schemes. A debugging session that finds an unexpected value in 9F72 should treat that as a question for the card's issuer or scheme documentation first, not as evidence of a parsing bug, precisely because this dictionary can honestly confirm the envelope's write-protection status without being able to say what its bytes are actually supposed to mean on any given card. See EMV Contactless Book C-2.