Hi Can someone help me with this error:<br><br>ODBC Error Code = 23000 (Integrity constraint violation)<br><br>[Microsoft][ODBC SQL Server Driver][SQL Server]Cannot insert the value NULL into column 'UserName', table 'PostYourHome.dbo.Sellers'; column does not allow nulls. INSERT fails.<br><br>I got this error when inserting a form data into SQL database. I have created all the seller details in "sellers" table and also has username filed in Sellers.<br>When i insert some data into sellers table , i get thsi error.<br>i basically want to know what this error means.<br><br>Thanks<br>Praveen<br><br>