Steps:
Important: The bill must be synced prior to syncing its associated Bill Payment. Please see How to Sync a Bill to Sage Intacct.
Navigate to Accounts Payable → Manage Payments
Locate the corresponding payment for the bill.
Once you have located the payment number, click the checkbox beside it and click Sync to Sage Intacct.
Wait a few minutes before refreshing the page.
The status will update to Synced when it is successful.
Additional Information:
Only Bills with a Paid status can be synced to Sage Intacct