TRIGINVCHSET, Trigger tttt for global gggg was created with CHSET=cccc which is different from the current $ZCHSET of this process
Trigger/Run Time Error: TRIGINVCHSET occurs when a process invokes a trigger on a global using a $ZCHSET that is different from the $ZCHSET used at the time of loading the first trigger on that global. GT.M implicitly uses the $ZCHSET of the first trigger on a global to invoke all triggers on that global. Note that tttt is the name of the first trigger on the global gggg-not necessarily the name of the trigger being invoked. cccc is the $ZCHSET of the process at the time of loading tttt on global gggg.
Action: Ensure that the process invoking a trigger on a global uses the same $ZCHSET that was used to load the first trigger on that global. If your application requires triggers in both M and UTF-8 modes, use different globals to load M mode and UTF-8 mode triggers.
