I’m sure they retrenched their experienced operations staff during Covid!!Who ever replaced them are probably responsible for this stuff up?At the end of the day you get what you pay for and things like this are the result.From a pilots point of view,you have to check everything thoroughly,because you can’t trust inexperienced staff.But,having said that,your not expected to know the aircraft approvals for the Indonesian operation if this is the REAL reason for the turn back.