Resource assignments are a departure from the basic CICSPlex® SM object model of definitions, groups, and descriptions (or specifications). They add a significant degree of flexibility and control to the resource definition process. And they increase the precision with which you can manage the resources in your CICSplex.
Once you have gathered resource definitions into resource groups, you can use resource assignments to:
To take full advantage of Business Application Services, you should associate your resource groups with resource assignments and your assignments with a resource description. To do this, you would:
Use the Resource group name, Target scope name and Related scope name fields
(WUI) or ResGroup, Target, and Related fields (EUI) on each resource assignment
to identify resource groups and the CICS systems to which they should be assigned.
You can also use a filter string expression to select resources from a group and an override string expression to modify specific resource attributes.
In this approach, the resource description is really a means of grouping the resource assignments for various resources into a meaningful set, such as an application. The selection and assignment of resources are ultimately controlled by the resource assignments.
Note that the same resource assignment can be associated with more than one resource description, just as the same resources are generally used by more than one application.
Depending on the resource assignment values, some or all of the resources in the resource groups may be assigned as local or remote resources in multiple CICS systems.