Error message
“420506: Invalid Postcode Format”
What this error means
DHL could not validate the postcode format for the selected country.
The postcode does not match DHL’s required format.
How to fix it
Review the postcode entered in the merchant or consumer address
Remove spaces or unsupported characters if needed
Confirm the postcode format matches the destination country requirements
Save the changes
Retry generating the label
Retry the label
After correcting the postcode format, retry generating the label.
Keywords
Carrier: DHL
Error type: Invalid address
Related terms: postcode format, invalid postcode, address validation