Update Journey Application

This endpoint has 3 different use cases:

• Send the additional or updated data required to advance the application.
  • Only available if one or more entity applications have the statuses pending_documents, pending_step_up, or data_request.
• Send new, additional entities to be processed.
  • Only available if the parameter do_await_additional_entities was set to true in the POST request to create the journey application.
• Inform the system that the user has finished sending all additional entities by passing the parameter has_finished_sending_additional_entities with value true.
  • Only available if the parameter do_await_additional_entities was set to true in the POST request to create the journey application.

Any of the headers used with the original application (ex: alloy-sandbox) will also be used here.