Issue while Upgrading Stack through Sum Tool in Solman

Hi Experts,

We are facing an issue while upgrading support packages in solution manager through Sum Tool using Stack.

System Details :

Solman Version : Solution Manager 7.1

Sum Tool Version : SUM 1.0 SP 11 patch 2

Can anyone please let us know how to move further..

Thanks in Advance..

Regards,

Krishna.M