Where on segment.com/docs did you see this issue?

https://segment.com/docs/connections/destinations/catalog/actions-sendgrid/#recording-custom-user-traits

What browsers are you seeing the problem on?

No response

Please describe the issue.

Hi Team!
Our Sendgrid destination doesn't support updating lists with the contact that we send through into Sendgrid. Our docs are incorrect in indicating that the destination can be used to update lists in Sendgrid.
Lmk if you have any questions. Thanks!