Summary
This article explains one of the scenarios in which 'Failed to set the meta data of project' error can occur.
Error
Failed to set the meta data of project 'XXXX', ; Failed SQL: /* ~~QC */ ALTER TABLE BUG ADD BG_USER_35 VARCHAR (255) NULL [Mercury][SQLServer JDBC Driver][SQLServer]Column names in each table must be unique.Column name 'BG_USER_35' in table 'BUG' is specified more than once.;
Cause
The Column BG_USER_35 is not unique.
Fix
Drop the Column BG_USER_35 from the BUG table to fix the issue.
NOTE : Take help from DBAs to know the query to drop the column.