Screen Numbers required for object links

i am unable to add few object links to a document type as i dont have the screen number for the object links. Can anyone give me the screen numbers of the following object links

L Object Object Desc. Screen Number

EN AENR Change Number

EN AFPO PROD ORDER

EN ANLA Asset

EN ESTLP Subst.rep.gen.var.

EN ESTRH Substance master

EN NFAL Case

EN NORG Organizational unit

EN NPAT Patient

EN PLPO TASK LIST

EN PMQMEL PM notifications

EN VORGNET Network

Also, it would be of great help if i can get how to find these screen numbers and also the comprehensive list of all the possible default SAP object links a Document type can have!

Edited by: sujatha sirobhushanam on Jan 15, 2009 8:07 AM