SQL Server has a limit of 8k characters in a given row of a database table. Due to the conversion of environment tables to Unicode when upgrading to the current version of ProjectWise, the number of characters defined for each column will double, which will result in a table, that was over 4k before conversion, to exceed the 8k limit after conversion. This will cause the DMSCONV process to fail when upgrading from ProjectWise version 2.x or 3.x.