This error occurs when DHL Express cannot generate a label because one or more products are missing required customs information, typically the country of origin (COO) or HS code.
Error message
"Multiple problems found, see Additional Details — dhl-express"
What this means
DHL Express requires customs information for all products in an international shipment. This error usually means one or more products are missing:
country of origin (COO)
HS code
How to fix it
Check the products in the dashboard.
Identify any product missing a country of origin or HS code.
Add the missing information in Shopify.
Once updated, reprocess the return and regenerate the label.
If the issue continues
Contact support with the RMA ID, affected product names, and a screenshot of the error.