DTC U2100-56: Initial Configuration Not Complete - Invalid/incomplete configuration: Action

NOTE: After updating the car configuration file, set the ignition to on and wait 30 seconds before clearing the Diagnostic Trouble Code(s)

Using the Jaguar Land Rover approved diagnostic equipment, reconfigure the restraints control module with the latest level software and calibration
Using the Jaguar Land Rover approved diagnostic equipment, check and update the Car Configuration File (CCF) as required. Clear the DTC and retest