Application program calling DDCALL to access the Datacom Datadictionary tables fails with Datacom DSF error VNA .
Datacom
VPE from IPC is missing.
As documented in the action from VNA , include VPE9864 , which is the 24bit bootstrap for DDCALL, in the program application link.
Any Datacom MUF requires IPC, so check the MUF's STEPLIB concatenation for VPE* and VTMP* modules to locate the IPC load library.