Is there any impact changing Match Approval Level field in PO Change Order to Read-Only?

Summary:

Business wants to restrict users from changing the value of Match Approval Level field from Purchase Orders.

Content (required):

During PO Change Order, user can update the Match Approval Level value from Line schedules, is there any impact if we change this field to Read-Only via personalization?

Version (include the version you are using, if applicable):

21D

Code Snippet (add any code snippets that support your topic, if applicable):