If the search argument specified is a PDSDE, the GET function is significantly restricted. The PDSDE (as mapped by the IHAPDS macro) identifies only one name to be searched for. Since the PDSDE also identifies the concatenation number of the library in which this member is to reside (PDS2CNCT), only that library can be searched. Since the PDSDE identifies a specific version of the member name (this identification is made through MLT (PDS2TTRP)), the name can only be considered found if the same version can be found in the target library. However, a library search can only be performed if the target library is a PDSE. If the target library is a PDS, the input PDSDE will simply be converted to an equivalent directory entry in SMDE format and returned. No directory search can be performed. If the caller has specified BYPASS_LLA=NO, the library search will search LLA for LLA managed libraries. If the caller has specified BYPASS_LLA=YES, only the DASD directories of the library will be searched. Figure 1 shows an example of DESERV GET by PDSDE control block:

Figure 1. DESERV GET by PDSDE Control Block Structure