Is this possible to control that an item is not on a sales order at booking ?

Hello there,

do you know if there is anyhow a way of making the system control that an item is not on a sales  order when the user tries to book the order ?

We have items that should never be on RMA and we would ike that a message stops the booking process when the user has entered one of thèse item on an RMA. This is specially important when a copy of the initial order is made to create a return.

Is there any form customization or control that could allow us to do this.

Thanks for your help