Hi Mohan m,
Please tell us what do you wants to get like? ie you can put in my knowledge in 3 places.
1 - In the Service Object. (General for all in SAP)
In the IE02 at the top left corner, use this icon.
2 - In the Local or Equipment with the DMS - Document Management System (Open Text - I don´t used for the moment and you need to have DMS active it and the document type should allow the PM object)
a - Create DMS document in the CV01N with the type document accept PM object and attach the document.
b - In the tab "Object links" put the equipment code and save.
3 - In the PM Structure Object with DMS. (Special PM view in the BOM local or equipment view)
a - Create DMS document in the CV01N with the type document accept PM object and attach the document.
b - Create the BOM equipment in the IB01 and in the document category put "D" - Document item
c - This will ask you the number DMS document created in the step a and save.
I hope this help you.
Regards,
Xavier