XI BPM Collect Meassages Scenario with one Message as an optional
I need help to implement XI BPM Scenario with Collect Messages Pattern. Here is my Scenario. I am getting four different types of flat files from four interfaces. Using these four files I need to merge using correlation relation and finally have to create One IDoc type to send it to SAP R/3.
But out of these four messages last Message type is an Optional Message. i.e the process has to continue even if forth message is not available by taking first three messages.
Please let me know which pattern is suitable for this scenario.