A valid hierarchy that contains unallocated data sets is shown in Figure 1. Member B INCLUDES member C. A build of member B from group USR1 will succeed, although a data set was not allocated for Cmnsrc at the INT group. The build will locate and use member C from the IVV group.

Figure 1. Valid Hierarchy with Unallocated Data Sets

A hierarchy that is not valid for the intended operation is shown in Figure 2. A promote of member B from the IVV group, which INCLUDES member C, will fail, because promote will attempt to copy member C in IVV.Cmnsrc to REL.Cmnsrc.

Figure 2. Invalid Hierarchy for Intended Operation