Generate MDG Data Model-Specific Structures while extending MM structure is running with no end result.

Hi Exerts,

I am new to MDM. I am trying to extend MDG-M with a field. I am using a standard document "SAP How-To Guide: Extend MDG-M Data Model by a New Entity Type (ERP Table, Reuse Option)" Version: 1.0

In this document I am trying to generate MDG Data Model-Specific Structures while extending MM structure is running with no end result.

I had to kill it twice already it ran for more than 2 hours in the last attempt.

Am I missing any role or do i need to do any setting please reply what else details are required from my end to under stand the problem so that I could get a solution.

Cheers

Piyas