Avoid PIR While creating 3Party sales order for confirmed date

[Arunkumar8]

When creating a third party sales order (item category TAS) initially at the time of creation the confirmed date of the schedule line determines based on the  Purchase Info Record (planned Delivery time). This is not the realistic date.

Now after creation of purchase order - once the vendor acknowledges the PO, the AB line gets updated in the purchase order confirmations tab. Now this Date is updated as the confirmed delivery date in the sales order. This is the realistic date.

Now business want to restrict the confirmed date happening via the purchase information record. This is because to send the realistic date as order acknowledgment to customer.

Can we avoid determination of initial confirmed delivery date which is happening via PIR ?