Issue in white board

Issue :- In Designation It was talkin special characters and numbers when we click on submit it was moving o next page
Expected Result :-In Desgination should accept only characters When entered numbers should get the pop up as "Please Enter Valid Designation"
Actual result :-when I entered numbers It was taking numbers and also special characters

Start by reproducing the issue in the Designation field and following the submit flow. Locate the validation entry point used before navigation; done means numbers and special characters are rejected with the stated "Please Enter Valid Designation" message and the form does not advance.

Written by the indexing model from the issue text.