Good afternoon. The system is apparently not allowing you to get the invoice files (at least in a test subscription).
Initially I thought it was from WebAPI. However, by manually generating an invoice (for being a test subscription) to see if there was any "start" needed to obtain the files (since there was such a bug with downloading invoices with a specific template, see What value should the Jasminsoftware API Web endpoint template parameter take to download an invoice?), I am still receiving the same HTTP 400 error (and, in WebAPI, {"message": "The specified file does not exist."}). Well, I know the invoice exists because seconds before I got the invoice number using that same ID ...
I also know that the code to access the file works, because it worked less than 1 month ago. Has there been any change in the file access method? Or is it the "party" system?