MSIR.0443 Invalid checksum in authorization zap created (date time)

This message indicates that the Sirius Mods authorization zap was incorrectly entered. The date and time that this zap was created at Sirius Software is shown as 'date time'. If the zap was manually entered, double check the contents from the original copy. If the zap was received electronically from Sirius Software, either it was modified during receipt or was incorrectly transmitted. You should double check your steps for receiving it or obtain a new zap from Sirius Software.

This error prevents Model 204 from running.