ORA-04091: is mutating, trigger / function / ORA-06519: active autonomous transaction detected and rolled back in IFS

--Avoid performing SELECT or DML operations on the same table or view.

The Event Action "Execute Online SQL" on "X_GPL_NEXT_PURCH_ORD_AUTH" has failed. 

Please contact your System Administrator to manage the Event Actions. 

ORA-04091: table IFSAPP.PURCHASE_ORDER_APPROVAL_TAB is mutating, trigger/function 

may not see it in IFS cust event