title: How to remove validation lastname from prestashop 1.7.8.3 backoffice
body: <p>I have a question how to remove validation from LastName inside client address edit. I need to allow numbers inside this field.</p>
  <p>I found here thread <a href="https://stackoverflow.com/questions/68001315/prestashop-remove-lastname-field-rules-validation-from-b-o">Prestashop : Remove Lastname Field Rules Validation From B.O</a>, but this solution is not working.</p>