KDKD10121-E
An event-hooked command that has the same execution trigger is already registered. (message ID = aa....aa, event-hooked command name = bb....bb)
Description
The specified event hook command cannot be registered because another event hook command, for which the execution opportunity of the event (message ID) is same has already been registered. The specified event hook command cannot be registered.
Action
Verify that the value specified in message_id is correct. If you want to run another processing when the message that has already triggered the execution is displayed, then add a processing to the script file registered as the event hook command.