If a record is failing to sync between Re-Leased and QuickBooks Online and can't be resolved by updating it in either system, there is an option to "Unlink" the record and exclude it from future syncing.
An example of when you might need to unlink a record is if a contact in QuickBooks is set up to use multi-currency. This feature is unsupported in Re-Leased, and once it's turned on for a contact in QuickBooks it can't be turned off again.
How to Unlink/Link
1. Select the flag and find the line with the error. Click on the validation message
2. Take note of what's causing the issue (ie. contact name, invoice ID etc)
3. Open the Sync Results page, ensure the filter is set to 'Linked' or 'Show all' and enter the 'Id' into the search bar and you will see your linked record
4. Select the record then select 'Unlink Records'. This will now be ignored in future syncs
Unlinked records can still be shown under the filter 'Unlinked'. If you want the unlinked record to sync again, you can relink it but if you haven't fixed the issue, it's likely the sync will fail.