Failed to Communicate with Callback Server email - but working fine

Hi Jack, First for my information, I want to make sure I understand your issues correctly. You mentioned you receive a callback from OneSpan Sign with a status of 200, do you mean you sent an API call and received a response with status of 200? Because then you mentioned you received a fail email, that's could because you registered a callback URL monitoring events and OneSpan Sign couldn't reach your url.(Shown in attachment) Duo

I get the callback from onespan because I am subscribing to Package Complete notifications. I am getting those callbacks fine. My issue is that I am getting an email from onespan saying that the callback failed (even though it did not). Once I get the callback notification in my listener, I return a 200 back up to onespan.

Hi Jack, Can you share the screenshot of your email? In the mean time, I would try the same thing on my own test server and try to reproduce the issue. Duo

And BTW, I think you don't need to manually send 200 back to OneSpan Sign.(In my PHP based server and Java based server, I both don't reply anything back to OneSpan Sign) Just remove those snippets and see if this works for you. Duo