TIP: If you’re using Remote Data Access for your data location, you’ll need to Stop Sharing before proceeding with the steps below. 

1. Change the accounting period to Period 1.
2. Load the integrity check by clicking Help, Support Utilities, Integrity Check. 
3. Select Backup. Enter a unique name for the backup and click Save.
4. Select Reindex Files on the left, and then select Vendor from the list on the right, and click OK.
5. Load the integrity check.
6. Click Continue since you've already made a backup in step 3.
7. Select Reindex Files, and then select Jrnl Header from the list, and click OK.
8. Load the integrity check, and then click Continue.
9. Select Reindex Files, and then select Jrnl Row, and click OK.
10. Load the integrity check, and then click Continue.
11. Select Vendor/Journal in the Data Synchronization Tests section, and click OK.
12. When the tests have finished, verify that it resolved your issue.

Integrity Check Guide