An issue has been identified on the New Household Registration screen. When a user fills in the Surname field and then deletes the input, attempting to re-enter the surname results in an error. This prevents successful form submission.

Steps to Reproduce:

1. Navigate to the New Household Registration screen.

1. Enter a value in the Surname field.

1. Delete the entered surname.

1. Attempt to re-enter a new surname.

1. Try to submit the form.

Expected Result:
Users should be able to re-enter the surname after deletion and successfully submit the form.

Actual Result:
An error occurs on re-entry, and the form cannot be submitted.