You must run an ARMBTSI job to establish a recovery timestamp before running ARMBCRC.
The ARMBTSI program inserts a timestamp in the format required by ARMBCRC. The JCL to run this program can be generated online when you choose the Establish a Recovery Point option on the Disaster Recovery menu. For more information about ARMBTSI, see ARMBTSI—Time stamp insertion or Full-subsystem-recovery.