trying to find the error in posting job cost don't match the general ledger

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most of the time the JC report matches the expenses on the general ledge, however as we start the new year of 2024 there are unexplained errors, Where do I look or what reports can I run to find the discrepancies? the G/L is higher than JC and I've run by source the journals and have variance from PR but can't find them, also from A/P. this hasn't happened in years. is there an issue with the newest release? I'm exhausted looking for this and its different every month now. Help please