Symmetrix and VMAX: Lock 248 on Symmetrix array not allowing configuration changes

               S y M M E T R I X      L O C K S

                              Lock       Lock    Lock                Time
    SymmID       Attachment   Status     Number  Usage               Held (Sec)

    00000000xxxx Local        Locked     248     EMC Eng Maintenance 1555301

Release Lock #248 for local Symmetrix unit 00000000xxxx (y/[n]) ? y

Cannot release lock it is held by the configuration server to protect a change session

Note: The Configuration lock 248 cannot be released even using the using the -force option <symcfg -lockn 248 release -force>

If you encounter this issue:

1. Verify the purpose for which the lock was placed.
2. Check whether the scheduled activity has been carried out or is still scheduled.
3. In case the scheduled activity has been cancelled and it is urgent to release the lock, document this in the SR.
4. Contact the EMC Support Center or your local EMC representative to release the lock.