allocation resource reference

A reference to uniquely identify a resource of an Allocation class. The reference is provided as a pair of Resource References to the Allocation classes components. For example, Products At Locations Allocation class has Products and Locations components. Allocation reference (Products.name, Locations.name) with values X and Y respectively, refers to the Allocation resource which consists of resource with name ‘X’ from Class ‘Products’, and resource with name ‘Y’ from Class ‘Locations’.