show custom message when a!startprocess when called from an interface fails

Question

I am using a!startprocess function from an interface to save some data to db, now lets say the process model being called encounters a run time error in some node, i need to show the user some custom message like ' some error occured' in the interface , onError dosent work here , as there was no issue starting the process.

Mathieu Drouin · Answer

This is an example that I like to refer to for handling errors with a startProcess in an API but the method would be very similar: https://community.appian.com/discussions/f/process/20396/status-code-of-a-webapi-to-start-process-model