SATO CT4-LX Operator's Manual page 494

Error Message 1073 (RFID Undetected Warning)
When there is an error with the product, the error message appears on the screen.
Tap the error number button to show the details screen.
Check the cause and countermeasure, and then take appropriate action.
To clear the error:
Tap [CANCEL].
Cause and Countermeasure
Cause
A print job that does not have an RFID
command was transmitted for RFID tags while
[RFID Undetected Warning] was enabled.
Countermeasure
◦ Add an RFID issue command to the print
job.
◦ Disable [RFID Undetected Warning].
◦ Replace with normal media.
Contact your SATO technical support if the error cannot be resolved.
Contact Information for When You Are in Trouble
Reference
RFID Undetected Warning
494