COB reporting process and reporting

Hello
I begin with T24 and realise actually a mission in bank using T24. NB : This bank use R14 of T24
I want to help this bank :
1) to identifiy mismatch entriees after COB and correct them
What can I do please ? Which report file generated in COB can help me ? Which JQL can be execute to determine efficiently those mismatch ?
2) Which JQL can be execute to identify all  account having negative working balance at 30/06/2023 ?
I need in this query the information below :
 branch account, account number, account currency, working balance in account currency, date, customer ID, customer name
3) WHere can I identify all COB program which generate a file report ? Where are those file name are configured ?

Hi
to get mismatches report you can run application RE.STAT.MISMATCH with V function.

Balances can be found in FBNK.EB.CONTRACT.BALANCES (for the main company; for others - find out corresponding mnemonic in F.COMPANY) and in FBNK.ACCOUNT (for main company).

Consolidates balances: F.EB.JOURNAL.SUMMARY, FBNK.CONSOLIDATE.ASST.LIAB (again - for main company).