To restrict the document types in step 2 of the sourcing cockpit that are displayed under the create draft button do the following
- Go to SM30 and enter /sapsrm/v_soco
- Uncheck the document types that are not necessary
- Save (enter through the SAP warnings)
Before:

After:

I was just searching for this, I saw it as a co-incidence! Very useful. Thanks!
We searched in the WD component... but did not get any option to achieve this.
This is really help full.
Thanks for posting such a nice piece of information.
Thanks Robin.
very informative.
Muthu