Avery Dennison 9850 RFID Multi-Protocol - Manual (Page 29)

Setting Up the Printer 3-5
If an RFID error occurs, the format is not printed on the label, but the
overstrike pattern is.
If a non-RFID error (verifier error) occurs, the format prints on the label
with the overstrike pattern.
RFID Overstrike Non- RFID Overstrike
printed from a verifier
error