Why the sync error occurs
This error occurs when a funds transfer or payment is trying to sync from Bill.com to Microsoft Dynamics GP (MSDGP), but the CheckBook ID associated to the payment GL account is inactive in MSDGP.
How to fix the sync error
Checkbook ID inactive in MSDGP
If the CheckBook ID associated to the payment account is inactive in MSDGP, reactivate it, then sync again to resolve the errors.
Checkbook ID active in MSDGP
If the checkbook ID shows active in MSDGP, make sure there isn't a different, inactive CheckBook ID also associated to the payment GL account.
If there is, you'll need to create a new payment GL account to link to the checkbook ID used for Bill.com payments. In this case, you'll need to manually enter the erroring funds transfers or payments in MSDGP, and then funds transfers and payments will sync going forward.
Note: The sync references the first checkbook ID linked to a GL account when syncing payments and funds transfers, so we do not suggest linking more than 1 checkbook ID to a GL account.