Sorry but I'm working for Utility companies... hence I never had to find any cookbook for your scenario. But as far as CRM integration with IS-U is concerned, you'll find all the cookbooks you need under http://service.sap.com/utilities. Then go to "Product information >> SAP CRM for Utilities >> Cookbooks". Here is an example of what you're looking for:
https://service.sap.com/~sapidb/011000358700000347572009E/SLG_GP_rel_Partner_roles_e.pdf
I guess you should be able to download the same for Social services? Or you'll have to wait if anybody else on SCN can help you further... and if not, open an incident on http://support.sap.com/message explaining your problem and asking for the relevant cookbook to check your customizing.
Best regards,
Nicolas.