Windows activation code missing for RO1200

Hi 

We tried to active windows 2019 of RO1200 with below doc(https://documentation.commvault.com/2022e/essential/what_s_in_box_01.html), we found found there was no Windows Server 2019 Standard Product Key sticker on the top of the server. Is there any way to find the Windows Server 2019 Standard Product Key for RO1200?

Thank you in advance for your answer !