A data SMS has been received.
Data SMSs are sent to particular ports. This event will trigger on an SMS to any port, unless a particular one is specified.
Data is the Base64-encoded binary data which was received, accessible via %evtprm3 in the resulting task.
It can be e.g. written to a file with Write Binary or converted decoded to a string (assuming the binary data represents a string) with the Variable Convert action.