You must specify a different number. This number has already been used.

How to map another number

Problem

You cannot sync sales to QuickBooks Online. This happens with you put two refunds on the same Shopify or Amazon sale. Connex creates sale 100 for refund one and 100-1 for refund two.

Description

The second half of the refund fails to sync. Your Connex log shows this error:

You must specify a different number. This number has already been used.

Solutions

Use next numbering in QuickBooks

Here are the steps:

In Connex, go to settings > order setting > transaction type.
Check use next number.
Click save.

Connex will map the order number to the memo field. You will get duplicates, if you resync.

Turn off custom transaction numbers

Here are the steps:

1. Open your QuickBooks Online and navigate to Settings >> Account and Settings >> Sales

2. Check that 'Custom transaction numbers' is turned OFF

3. Click back over on the left menu panel to QuickBooks Online Settings >> Account and Settings >> Advanced

4. Check that 'Warn if duplicate check/bill number is used' is also turned OFF

Please make any of the above adjustments and then retry syncing.