How do I prevent malformatted DHL information with Address Ninja?

Open Address Ninja from Apps in your Shopify admin. On the home page, click Block malformatted DHL. Click Turn on. When a customer enters a DHL Packstation, Paketshop, or Filiale address, the rule checks for a valid Postnummer and a station or branch number. Customers see a different error message for each missing or invalid part. To change the messages, open the Error messages card: Missing branch number, Missing Postnummer, Missing Postnummer banner, Invalid station details, and Missing Packstation number.

This rule only applies to Germany and cannot be on at the same time as Block DHL pickup points. Turn that rule off first. The check also runs when the customer completes checkout, including with a saved address. This rule is included in the Growth and Pro plans.