Assignment Info area Read-Only on REDWOOD

Summary:

We have a business requirement where we need to make the contents of the "Assignment Info" area to be visible BUT READ-ONLY. We have create a busine

ss rule and marked the fields as read-only… but when previewing, we are still able to make changes by clicking on the field and selecting from drop down LOV.

In responsive pages, we had used EL Expression to make the field read-only.

Created a Form Rule.. set all Children Read-Only

Noticed the LOCK on the region

Can we use 'Configure Validation' and use ERROR? to stop making any changes? like selected value is NOT EQUAL to initial value?