Request you to share the list of CA tables shared by both CA Service Catalog and CA Service Desk.
Which release of the products are you working with?
For SM 14.1, please start here:
CA Service Management Common Data Object Field Level Mapping Details - CA Service Management - 14.1 - CA Technologies Do…
For earlier releases, you may need to look at several references.
Online, there is the Computer Associates International, Inc. Table List for MDB 1.5. However, I don't believe this is being maintained as it points to a web section that has been almost completely deprecated. Also, it does not call out the mapping between SDM and SC - mostly the common tables it has called out are for Assets between products.
Also, for SC 12.8 there was an ERD available at some point. I believe it was 'SLCMr12.8-ERD' which you can cross-reference with the above. I don't think this has been published publicly.
This has been requested for some time. The move on SM 14.1 is a good start.
Retrieving data ...