Twice a year - in September and March. The AAO reviews all ledger folios and enters any cases of missing credits or debits in the Register of Missing Credits/Debits (Form CAM-50).
Source: CAM Para 6.11
How often are GPF ledger folios reviewed for missing entries?
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This answer is for informational purposes only and does not constitute legal advice. Always refer to the original rules and consult competent authorities for official interpretation.