MOSS 2007 BDC Profile Import fails for a few users

Question

We have set up a BDC Profile Import for Sharepoint 2007 and it works well for 99% of the users. A handful fails with the "Exception occured when calling into BIL connector for import from non master data source" message in the crawl log, though

The ULS logs reveal the following information:

Exception Profile Import: Exception occured when importing user: '[redacted]\[redacted]'. Microsoft.Office.Server.UserProfiles.PropertyInvalidValueException: Invalid Property Value: Could not find SID corresponding to input account name

I have confirmed that the user

• has a sharepoint profile matching the username
• is a valid domain user
• exists in AD

Can anyone help me troubleshoot this?