Label generation errors can occur across any shipping carrier (e.g., FedEx, UPS, DHL, USPS), and are often caused by service availability, address formatting, or package limits.
Common Causes
The selected carrier service is limited or not available for the origin/destination.
The address is unrecognized (new zipcodes, remote locations, etc) or improperly formatted.
The package exceeds the carrier's size or weight limits.
Address Too Long: Long descriptive addresses that exceed the character limits required by carriers
Improper Formatting: Non-standardized or incomplete address formatting resulting in validation failures- PostalCode error: INVALID: This error frequently occurs when new postcodes or unverified locations fail carrier system validation. Double-check if the provided postcode is newly assigned or not updated in carrier databases.
Typical Error Messages
"Shipping label generation failed""The service 'XX' is not valid for this shipment""Unsupported origin or destination""Invalid address"-"Missing or invalid ship from address line 1""PostalCode error: INVALID"
How to Troubleshoot
1. Check the Address:
Use Google Maps to find the nearest drop-off service point or delivery point near the customer’s address.
Try using that address to regenerate the label — this helps determine if the issue is address-related.
Confirm the address's accuracy using Google Maps or national postal databases to ensure it matches standardized formats.- Example of a properly formatted address: Replace "Möckernstraße 66 with the blue shutters on the corner" with the shorter and standardized version: "Möckernstraße 66."- Use online address validation tools to verify that the provided address and postcode are accurate and recognized by carrier systems.
2. Confirm Carrier Service Support:
Reach out to your carrier or 3PL to verify which services are valid for that country or route. Make sure the weight and dimensions fall within the service’s allowable range.
Update support@yayloh.com to update your shipping configuration to use a supported service type.- Regularly validate and update customer addresses in the system to ensure compliance with carrier standards and minimize errors.- Double-check if specific return routes or shipping lanes are supported by the selected carrier. Consider alternate lanes or carriers as necessary.
Still Not Working?
Try generating the label directly via the carrier’s own system to rule out integration issues.