The "bop_cmd -f bop_diag.frg "list_blocked()" command should only be executed if advised by CA Support.
This is a debugging script and should not be executed unless there are problems reported with CA Service Desk Manager (CA SDM).
Running this script on a regular basis could result in benign errors similar to the following being written to the CA SDM STDLOGs:
'Spell interp failed at bop_diag.frg:157:list_blocked: ilimit exceeded '
In the above error message, there were many blocked messages at that moment when the command was executed and an internal instruction limit is reached, but eventually the block messages will get cleared by themselves by CA SDM.