STPCLCHS(CLC History) and STPCLCWR (Warning) file updates occur after posting through ATM.
The following is the order of the steps when posting/preparing transactions in ATM
STP400C:
…
Call ATMUSR20, if found
Call STP405B – Prepare/Post the transactions
Call ATMUSR21, if found
Call STP450B – This program writes to STPCLCHS(History) and STPCLCWR(Warning)
Payroll
Contract Accounting
Physical Inventory
Call ATMUSR22, if found
PC&C Scheduler
Call ATMUSR23, if found
STP410 – Change TRDATA transactions to TSTAT ‘5’