Error 429 : Too Many Requests

I'm a beginner like you, so consider my answer potentially not complete. 

Bravo in this case is just a development platform and will not impose any limit on requests or data.

For what I know, this error is not generated by Bravo but by Airtable  which doesn't allow users to create more than 5 requests in A SINGLE SECOND from the SAME IP Address. Same IP address, so we are talking about a single user or a small bunch of users. 

This limit I think is almost impossible to reach with a standard app (just imagine clicking on 5 products in a product catalog in a single second!) but maybe possible with games or trading apps, for example

If the 5 request per second limit is too low for you, you should consider dropping Airtable for a more customizable API platform like Firebase or similar.

Thank you for your answer, you might be right, I am working with Xano and I just saw that I need a premium plan to increase their API/second limit.
Do you have an idea regarding the ability of BravoStudio to handle multiple users ?

Are you talking about having multiple developer/designers on the creation phase?
I think this feature is only on the roadmap for now, not far I think but still not available. I'm having a similar problem since I'm working on my first app with a friend and sharing a project is impossible right now. We're splitting our tasks as well as we can, working on two different files (on two different accounts) that we'll have to integrate at the end, but it's more a  patch than a solution.