Multi-Dev builder profile domain verification

I am trying to verify a domain in the GPT builder profile. A colleague of mine previously went through the process with the same domain.

We are in the same organisation so would expect the domain should be verified across the organisation but this currently appears to be required for every developer. It still requests a domain to be verified.

Unfortunately, when going through the process of adding a TXT record the domain does not seem to allow it to be verified. Has anyone else been able to get the same domain verified for multiple users?

GPTs are not a commercial use product at this stage, they are for users of ChatGPT to create their own tools. This functionality may be added in the future if this becomes a developer path.