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Xero Sync Error: A validation exception occurred The invoice you are trying to allocate to has already been paid off Credit Note cannot be allocated as amount is greater than amount outstanding

Error

A validation exception occurred The invoice you are trying to allocate to has already been paid off Credit Note cannot be allocated as amount is greater than amount outstanding

Explanation 

This error occurs when a credit and/or payment in Bill.com is trying to sync to Xero, but a payment or credit is already applied to the bill in Xero.

Solutions

  • In Xero, verify that nothing has been applied to the bill. If a payment or credit has been applied, please unapply, and sync again. If the error persists, contact Customer Support.
  • If you do not need the payment to sync, please contact Customer Support
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