Use this function to detach the serial number from a part. This requires that the part already has a serial number. In order to detach a serial number, the flag Inventory Serial Tracking must not be set and the flag After Delivery Serial Tracking must be set. If none or both flags are set, you cannot reset the serial number. The flags are handled in Part. If the serial number has been set with the menu option Set Serial Number, use this function to reset the serial number to null. To reset the serial number, use the menu option Serials/Reset Serial.