Interrapt G27

Preconditions:
"User is logged in.
Book is added to cart.
User is navigated to checkout page.
"

Steps to reproduce:
"1.Locate and click on the first name field.
2.Enter a company name with invalid special characters in the first name field.
3.Fill all the other mandatory fields with valid data.
4.Click place order."
Expected result:
"1.First name field should be visible and interacatable.
2.The user should be filled with invalid data.
3.The user should fill all the other mandator fields with valid data.
4.Error message should be shown in red letters that the criteria is not met.

Actual result:
The order has been placed.
Environment:
Google Chrome/Version 123.0.6312.122 (Official Build) (64-bit)