Scheduling sales orders based on customer preferred days in a week

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We have a requirement that the SSD of the sales order line should be based on the customer preferred window. For instance, customer preferred window for Customer1 is on Tuesdays and Thursdays, then the SSD in the sales order should be only on 'tuesdays' and 'thursdays'. subsequently the shipment should be made in the customer preferred window. Also if the SSD is overridenby the users, the user should not be allowed to override SSD other than tuesdays and thursdays (customer preferred window). Do we have a provision to configure this in Oracle GOP? any pointers would be highly appreciated.