Method: CREATE_CURRENT_CONTEXT
Method: QUERY_PREV_DAILY_BALANCES
Method: FUIF
Method: READ_PERIODS
Method: FUMOD
Method: OPOUTZL
Method: GET_DATE_FROM_POSID
Method: OPSUM
Method: GET_MISSING_PERIODS
Method: GET_POSID
Method: OPVARST
Method: MERGE_BEG_END_OF_PAY_PERIOD