Configuration Tool failed to load the policy with the error message HBO6502E regarding message queue size

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The Configuration Tool failed to load the policy with the error message HBO6502E Unable to get list of definition.

Symptom

The Configuration Tool failed to load the policy with the error message HBO6502E.

Cause

The message queue size is not large enough.

Solution

  • If you get a message like message queue size 262144 is less than minimum: 20971520, you can excuse the TSO command SETOMVS IPCMSGQBYTES=20971520 and update dataset BPXPRMxx IPCMSGQBYTES(20971520) to enlarge the message queue.
  • If the message doesn't show the reason, enable developer mode of the browser and check the Network tab for the information with failed HTTP response.