Review the PTD balance for the acct/sub/ledger id/fiscal year in the GL Account History screen.
Run the GL Transactions report for that period, account, sub, ledger ID specifically.
Review the sum of the transactions per the report.
If the sum of the transactions on the GL Transactions report does not match the PTD Balance as stored in Account History it may be necessary to modify the PTD Balance using Initialize Mode to get it match the supported transactions.
NOTE: Take caution in modifying account balances as following year balances may need adjusted as well, and depending on the account type being modified, Retained Earnings and YTD Net Income account balances could be impacted as well. Confirm recent backups of the SL databases exist before making any modifications.