Intermittent 415 Errors Since October 30 (Shipping Methods App)

Hi everyone,

I’ve been experiencing 415 errors since October 30, and I haven’t made any changes to my app. The issue is related to shipping methods.

Has anyone else encountered this? In the new developer dashboard, there’s very limited information — only headers are shown, which makes proper debugging quite difficult.

Even when reviewing the logs, I can’t find these errors in the access logs. It’s so intermittent that I haven’t been able to identify a clear pattern or cause.

Does anyone know if Shopify recently made any changes or updates that could trigger this behavior?

Thanks in advance for any insights.

Hey @Pablo_Skog :waving_hand: - are the 415s you’re seeing related to webhooks per the graph from your dashboard here or are you having 415 status responses being returned to you from API calls made by your app?

Just wanted to confirm that before digging in here. If you’re open to sharing your app ID, I can take a look at our logs and investigate further as well. Hope to hear from you soon!

Hi Alan,

Thanks for getting back to us.

The issue started around October 31. We noticed that some webhooks from Shopify with the topic “orders/create” were failing to reach our app — they didn’t even appear in our access logs. Interestingly, some of these webhooks were successfully delivered after several retries.

Starting from November 3, the number of 415 errors began to decline without us taking any action, and as of today, November 6, we haven’t seen any new errors. This leads us to believe that some adjustments might have been made on Shopify’s side.

We’d appreciate it if you could share any information about what might have caused this behavior, and whether we should expect similar errors in the future.

Best regards,

Hey @pablo_skog :waving_hand:

Thanks for the follow-up. That’s definitely interesting that it self-resolved without any action on your end. The timing and pattern you’re describing does sound like something may have happened on our side during that window. The 415 errors are particularly odd here since that status code typically means the receiving server doesn’t like the format we’re sending, but if webhooks weren’t even hitting your access logs that suggests something else could have been going on before requests reached your app.

To dig into this from our end I’ll need a bit more info. Can you share your shop ID (or myshopify domain) and your app’s API Client ID? Also if you have a few specific timestamps with timezone of when you saw these errors that would be really helpful for looking through our logs. I can open up a DM with you if you’d prefer to share the info that way as well. Let me know and I’ll investigate further!

Hey @Pablo_Skog - just wanted to follow up here to see if I can help out further, let me know!

Hello Alan,
Yes!, please give me some time, my team is gathering some information.