The Cross-dependency data set is optional. It is only required if the Where-used function is to be used. Each project must have at least one cross-dependency data set for the Where-used function to be enabled. The VSAM attributes and space parameters should be the same as those used to define the accounting data set. Sample JCL for allocating and initialising the Cross-dependency data set can be found in member FLM02XDP of the ISP.SISPSAMP install library.