How to make CC field mandatory in Purchase Order?

Summary:

We would like to make the CC field mandatory in the Purchase Order when the communication method is 'email'.

Content (required):

We have a requirement to add the Procurement Team Group email address in all the purchase orders for a specific BU. We are trying to make the cc field mandatory when the communication method is to email for that BU via personalization. But the system is not allowing me to submit the Purchase Order when the communication method is 'None'.

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

22D

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