This is the hash key of the attributes which make up the composite key--- AgencyId, RegistryName, EffectiveStartDate and EffectiveEndDate ---for the Theme Assignments resource and used to uniquely identify an instance of Theme Assignments. The client should not generate the hash key value. Instead, the client should query on the Theme Assignments collection resource with a filter on the primary key values in order to navigate to a specific instance of Theme Assignments.
For example: publicSectorRegistryThemeAssignments?q=AgencyId=<value1>;RegistryName=<value2>;EffectiveStartDate=<value3>;EffectiveEndDate=<value4>
No content. This task does not return elements in the response body.