How does Axway handle sending to a specific file name at an integration delivery exchange point, if the file name is already there, and neither overwrite nor sequential numbering is checked?

Let me setup the scenario. An inbound 834 comes in to Axway -> Axway sends it to Edifecs for validation/translation/etc.-> Edifecs sends it back to Axway -> Axway renames the file to a specific name and delivers it to the integration delivery point. Axway can not overwrite the file if it is still present, and it can not sequentially number the file. The filename has to be specific, and cannot change.

The backend (mainframe), where Interchange is delivering this file, triggers an "event" when the file arrives. The event will trigger a job/process to run which will grab the file and carry it down the process chain. The concern here is the state when Interchange has another file to deliver, but the job has not yet deleted the previous file.

So, if the file is already present, and Interchange can not overwrite it, what does Interchange do? Fail? Retry to write the file after a certain interval?