Xero Sync Error: The Account Number already exists. Please enter a different Account Number.

Why the Sync Error occurs

This error occurs when:

  • Chart of Account: the account number on a new Chart of Account cannot sync to Xero because the account number is already in use in Xero
  • Vendor/Customer account number: the account number on a vendor or customer already exists on a contact in Xero

How to Fix the Sync Error

For accounts:

  • If this is not a duplicate account, edit the account number to one that is not already in use within Xero then sync again
  • If this is a duplicate account, delete the account or contact Customer Support to help with merging the two accounts

For contacts (customers or vendors):

  • If the error is on a contact that has not synced to Xero yet:

    1. Remove the account number from the vendor/customer record
    2. Sync to create the contact in Xero
    3. Add the account number back to the vendor/customer
    4. Sync

    If the error re-appears, contact Customer Support to clear the error.

  • If the error is an update on a contact that has already synced to Xero in the past, contact Customer Support to clear the error.