It had no welcome code. The box was sealed but under the hub was 2 booklets one about the bulbs and one about the smart things device. No welcome code to set it up though…
Assuming youre talking about setting up a new smarthings hub that is missing its welcome code:
Email support, they will require a picture of the serial number on the bottom of the hub.
Ha, I didnt know that either. I must just be tired I hadnt even caught the bulb comment.