Event failed to trigger for certain application or the application generation always goes to APPLWAIT state.
ESP dSeries Workload Automation DE
Generally, the DE Server checks if an application generation is active in the DE database and 'Do not trigger if active' check box is enabled in the application properties. If there are any records satisfying the query, the DE Server assumes that some previous application generation(s) is/are active, and does not trigger the Event to run the next generation.
Consult the database administrator and run the SQL query against the DE Server database for the specific Event name;
select count(*) from ESP_WSS_APPL where EVENT_NAME ='<eventname>' and STATUS = 1;
If there are any records satisfying this query, use the cold start type 3 to delete any previous generation of the application that is active.