Duplicate Insurance Carrier information error on Contract

On the Insurance tab of a Contract, attempting to enter a second Insurance carrier line with similar information (but different Type) results in an error: 

This carrier, policy number, and expiration date already exists on this contract. And it cannot be saved. 

Munis EERP

Contract Management 

This is currently being investigated by Development under Research MUN-494508

Currently, this is a valid restriction. EERP development is looking into this via Research MUN-494508