Reverse Unsettled AR Payment

In AX 2009 I have posted AR Payment on GL(not AR module) it contains an invoice with missing dimensions ,I need to reverse this AR payment against the bank in correct way ,the AR payment is unsettled and I receive error when try to settle in Open transaction from related to missing dimensions .
How I can reverse AR payment that are unsettled ?

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You can try posting a new GL transaction as an opposite entry to your payment. Then you will see both your payment and reversal in open transactions. Settle them against each other.