What does no RFA data mean when tring to program key fob 97Cadillac Eldorado?

"No RFA data" indicates that the Remote Keyless Entry (RKE) system in the 1997 Cadillac Eldorado is not receiving or recognizing the required data from the Radio Frequency Accessory (RFA) module. This could be due to a malfunction in the module, issues with the key fob itself, or problems with the vehicle's wiring or connections. To resolve this, check the RFA module, ensure proper programming procedures are followed, and verify that the key fob is compatible and functioning correctly.