Bookings with me we could not fulfil your request.

Bookings with me we could not fulfil your request when using guest non Microsoft account.

I would screenshot the error but your file upload doesn't work here.

Error is:

Booking info, times and time zone

exclamation mark in big circle

We could not fulfil your request

Error

big blue OK button

btw. api call response is:

{
"error": "Status(StatusCode=\"Internal\", Detail=\"Exception of type 'Microsoft.Outlook.Services.Bookings.Operations.SelfServiceBookingEmailVerificationRequiredException' was thrown.\")",
"code": 13,
"message": "Status(StatusCode=\"Internal\", Detail=\"Exception of type 'Microsoft.Outlook.Services.Bookings.Operations.SelfServiceBookingEmailVerificationRequiredException' was thrown.\")",
"details": [
]
}

error happens after I insert name, email and message on booking slot selection as guest

P.S. I know that there is similar thread but it looks dead and seems like Microsoft doesn't care.