In CRM, a write-off would have to be done to remove the balance from the pledge, so that it is no longer expecting to receive those funds. However, the TA/CRM sync does not handle write-offs, so there is nothing that can be done in TA to write off the amount in CRM. It is also not advised to attempt to add a write off in CRM for the amount, as that could cause issues later with TA.

The only possible solution in TA is to adjust the pledge so the pledge amount matches the paid amount, essentially making it a fulfilled pledge instead of a partially collected one.