General troubleshooing
- cURL error 60: SSL certificate problem: certificate has expired
- the parcels.0.items.0.unit_weight must be between 0.01 and 1000.
- The given data was invalid - agent.agent_no: There is no such agent
- The given data was invalid...
- XML file does not appear to have any style information
- List of all error messages
Shopify troubleshooting
- Failed to fulfill line items
- Shopify - Smart Send sent a shipping update....
- Shopify - AuthenticationException
- Shopify - MissingEmptyFulfillment
- Shopify - MissingShippingMethod
- Shopify -Duplicate shipping method names