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This error occurs if you try to add a PSTN gateway and your mycloudvoip.com.au domains have not been added correctly.

Possible issues:

- Typo, go to Microsoft 365 Admin and check spelling of the 2 x domains
- You have not added a temporary user using the mycloudvoip.com.au domain(s) as their default domain or default e-mail address
- Microsoft is still processing (we have seen it take 1-2 hours)
- We’ve sometimes needed to remove the temporar