Oracle Message ORA-16012 - Archive log standby database identifier mismatch

ERRORArchive log standby database identifier mismatch
CAUSEThe database identifiers of the Primary and Standby database do not match. Remote archival of redo log files is not allowed to incompatible STANDBY database instances.
ACTIONTake the necessary steps to create the required compatible STANDBY database before retrying the ARCHIVE LOG processing.