Hi there,
our Workflow ist struggling with an expression an a serviceTask.
The expression says ${error_list.put(cause_application_name, messages_array)}
error_list is a JSON (set via initializa variables task)
cause_application_name is a fixed string e.g. invoice_tracker
messages_array is a variable, that looks up the JSON message send via Kafka ${reply_body_invoice_tracker.errors}
We are using this service task with the very same expression more than once. But only one service task reports the error-log: “Unknown method used in expression ${error_list.put(cause_application_name, messages_array)}”
Why is it, that this expression works just fine for other parts in the workflow?
Or what exactly dose “Unknown method used” mean?
Thanks for your help.
Nicole