ZIP code validation only takes effect once all other mandatory fields have been filled in during checkout.
While testing the checkout process, I noticed inconsistent behavior when validating the postal code.
Steps to reproduce:
Go to checkout.
Select country.
Enter an invalid value in the “Postal code” field (e.g., asdasd or asd123).
Leave at least one other required field blank.
Click “Continue.”
Result:
All required fields are marked as incorrect except for country and zip code.
The zip code is not displayed as invalid in this state.
Further behavior:
As soon as the previously missing required field is filled in, the zip code validation takes effect retrospectively and the field is then marked as incorrect.
Expected behavior:
The ZIP code should be validated immediately as soon as an invalid format is entered, regardless of the status of other required fields or alternatively, a uniform validation behavior should be applied to all required fields.
Note:
Even though this case is likely to occur rarely, the behavior appears inconsistent to users and could lead to confusion.
Dominik Vollath
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