Duplicate Document Number error

Error: Duplicate Document Number error: You must specify a different number. This number has already been used. DocNumber=111111 is assigned to TxnType= Invoice with TxnId=000000


Resolution: This error message indicates that the document with the same number already exists in QBO. In this case it's invoice. You will need to change the number of transaction you're trying to sync or delete the old transaction from QBO.

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