Same Name Conflict while Check in Proe Model in to windchill

Hello,

I heck out one Drawing from windchill, updates it and after all i am going to Check in this updated Drawing to Windchill, it shows me Same Name Conflict in Workspace, i changed the Workspace but still Same Name Conflict is There and I not Able to Check in This Drawing to Windchill

Please Give me Solution of above same.