How Do You Reconcile Accounts Receivables With Credit Balance?
You need to check your posting to these accounts. Credit balances in AR may arise from wrong posting, or it could be an advance payment from a customer. If the credit balances in AR are not material, you can leave them there while you investigate how they arose, but if material, you need to reclassify them out to AP. The same principles apply to AP with debit balances.