In IBM Cúram Social Program Management web services are not automatically associated with a security group. This is to ensure that web services are not vulnerable to a security breach. You have to provide security data in order to make your web service usable. As part of your development process you need to ensure that the appropriate security database entries are created. For instance:
INSERT INTO SecurityGroupSid (groupname, sidname)
values ('WEBSERVICESGROUP', 'ServiceName.anOperation');
The contents of the IBM Cúram Social Program Management security tables are explained further in the security chapter of Cram Server Developer's Guide.