Hello - Can you recommend a good reference for Entity Type Codes for MS CRM 2011? I found the following reference but it's for CRM 3.0: http://technet.microsoft.com/en-us/library/aa682922.aspx
I think you need to query them..
SELECT * from EntityViewORDER BY ObjectTypeCode
The above table shows the all object type codes of every entity in CRM 2011.It will help you.
Please find the same in the below article :