Message IST530I or IST1278I received with NMVT PENDING

Problem statement: Message IST530I or IST1278I is issued for a PU even though the NetView® program (if installed) or the System p® network management program for System p devices receives session awareness (SAW) data for an SNA device.
Common symptoms: Message IST530I or IST1278I is issued each time the IOPD timer expires. For additional information, see the message descriptions in z/OS Communications Server: SNA Messages.
Probable cause: The device is not real-time monitor capable. This means that the device did not process the response and return the requested information properly to the NetView program for most devices, or to Network Management/6000 for System p devices. A microcode change is needed to permanently resolve this problem.
User response: You can prevent this problem by pointing the device to a KCLASS and using a SAW data filter to stop VTAM® from attempting to collect the data.
Note: See the z/OS Communications Server: SNA Network Implementation Guide and z/OS Communications Server: SNA Resource Definition Reference for details on how to code a SAW data filter.