I don't know why I am getting ORA-06512 and ORA-04088
The trigger compile successfully!! Please help!! See my trigger below.

ORA-20010: Deletion not allowed!!! This is a Must Count item
ORA-06512: at "APPS.CMM_MUSTC OUNTITEMTRIG", line 39
ORA-04088: error during execution of trigger 'APPS.CMM_MUSTC OUNTITEMTRIG'

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Code:
create or replace
TRIGGER apps.CMM_MustCountItemTrig
...