SAP Message TU377 - Partially locked budget billing item cannot be processed with trans. EA62

Diagnosis
You tried to change the business lock for a budget billing plan item.This lock was not set for all subtransactions of this item.
You can only use this function in the transaction Mass DocumentChange (FPE2M) - the transaction used to set this lock.

System Response
You cannot use the budget billing plan change transactions to changethe business lock for this budget billing item.

Procedure
Use transaction FPE2M to change the business lock.