Message no. DA515 : Table change not possible.There is a DB trigger on the table

Hi All,

i am facing error when trying to activate table QMEL after appended new fields to this table.

The below is log message are as below :

How can i disabling the db trigger ? and , what are the alternative solutions to fix this issue ?

How can i track who is the creator of this db trigger ?

What is this db trigger and what is the root cause of this error ?

Thanks