If your product lacks a serial number (S/N) or W/N number, you may utilize the Part Number (Part No.) as a suitable alternative.
In case your product label contains a W/N number, it can be used as an alternative to the serial number.
Please refer below information:
![WN WN](../upload/faq_b/9b1eaa9a1f3b18cc4bcf1f3f0181003b-20221124143311.png)