Can we restrict the Requistion submission when it has items belonging to different categories?

Summary:

The business is following a category-based approval process for the requisitions. They want the system to either allow the 'approved' lines to be processed into a purchase order or it should prevent the requester from submitting a requisition which has items from multiple categories.

Content (required):

For example- A requisition has 2 lines with item A and item B (both belong to different categories)

The approval process has been set up in a way that the approval request for item A will go to Approver 1 and for item B, it will go to Approver 2.

Now a requester submits a requisition which contains both item A and item B. The approval request will be sent to both approvers.