The dispatch status of the EDI invoice can be monitored as described on our integration site. ( see this page )

In short, the folders may be monitored to see where the EDI file appears:

*sent* Stores successfully dispatched files. There will also be a dispatch results file available for each sent document. The dispatch results file has the same name as the original file, but has ‘.dispatch.xml’ appended.

*failed* Stores files which didn’t pass the validation and therefore which weren't dispatched. There will also be a validation results file available for each failed validation file. It has the same name as the original file but ‘.failed.xml’ appended.

*dispatchfailed * Stores files which passed the validation, but which couldn’t be dispatched. There will also be a dispatch results file available for each failed dispatch file. It has the same name as the original file but ‘.dispatchfailed.xml’ appended. Dispatch might fail because of an invalid e-mail address in the document.