I have followed the document as described but getting the following error when running in debug mode:
Even the sample application provided has the same issue. My Interface is configured as follows:
Up to this exercise everything seems to have worked as expected. I tried changing the rule input in the interface to Vehicle which resulted in a lot more error messages. I deleted the process model and generated a new "Create" process model automatically.
Any help to get working would be greatly appreciated.
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Enter the value for all fields in the Create Vehicle form and then try: