All,
I have an issue with sending Teams meeting invite.
The flow premise starts out with a SP List, I then collect member details from two SP sites. After much work, we get to decide if we want to send an outlook or Teams meeting invite. I have got the condition working and can get the following point

When I run the flow, I get an error of "At least one property failed validation". The data I have entered into the Team’s meeting invite is as follows:

I have checked the connection for the above and its is correct, is there something that I am missing.
The normal outlook meeting invite works on the other side of the flow correctly.
I do not have access to Graph as I am end user on this tenant.
Regards,
Andrew