Purchase Order Routing

I am in the middle of implementing Purchase Request Routing into our system (JDEdwards 9.1).  Our purchasers adjust the order to match the amount of material that is being received to the amount that was shipped (we are receiving coils of steel and it is rarely the exact amount that we order).  We have critical fields set up to send the order back through approvals if the quantity is changed, but when I get to this point with an old order, I get an error message "Approvals Status codes Missing: Both of the Approvals Status Codes in the processing options,