Two-factor counts only if you can move it

A code that the other side reads and forwards is not control. Two-factor is handed over when the authenticator, the security key, or the trusted device is yours.

What to write

Say which method is on the account and whether it can move before the balance. If a phone number receives the codes, that number has to change to one you control, or the step is written on the same page. Do not ask for a live code in the first message.

Apple and Google

Apple's individual or company membership and a Play account both need this field. Turning two-factor off to make a sale easier is not the handover Guyi writes. After it moves, remove sessions and members that are outside the agreement.

Questions

Is a screenshot of a code enough?

No. A screenshot expires and leaves the method with the other side.

Can the seller keep a backup code?

Not unless that exception is written. A spare code is another door.

Ask for the account this guide describes

Send the spec to @hagee66