Plant Maintenance ER Diagram

Hi all,

I would like to carry out a draft gap analysis betwwen the actual system the company I am working in is using and SAP PM module in order to estimate and plan activities.

Would anybody know how to find a SAP R3 PM Entitiy Relationship diagram?

Would you please sendi it to me (roberto.garbuglia@gonet.it) or jest give me the appropiate links..

I would be very grateful..

thanks.