10000469 
Message
Business partner type must be vendor
Diagnosis
In the 
Administration 
System Initialization Opening Balances 1099 Opening Balance 
path, you have created a 1099 Opening Balance report.
You have attempted to add a new row or update an existing row with a customer-type business partner. You have chosen Update.
Procedure
In the 1099 Opening Balance window, in the Vendor Code column, make sure the business partner type is vendor.