system should prevent the creation of Purchase Orders with specific Category and destination type

Summary:

We are seeking a solution that allows us to utilize the Category (parts &Services) for a Purchase Order only incase if the Destination type is Work Order.

The system should prevent the creation of Purchase Orders with Category (Parts&Service) for all other destination types other than Work Orders . 

Content (please ensure you mask any confidential information):

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

23D

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