Use this function to unreserve a serial number from a part. Unreserving serial number can only be performed on parts which have the Inventory Serial Tracking flag set (in Part). To be able to unreserve, you first must have reserved a serial number for the part. To unreserve a serial number, run the menu option Serials/Unreserve Serial. Parts which have the Inventory Serial Tracking flag set must reserve a serial number before a shop order can be created. If the reserved number no longer is needed and the serial number hasn't been used, then you can unreserve the serial number by using the menu option Serials/Unreserve Serial.