DE country almost always return MS_MAX_CONCURRENT_REQ

[firstpromoter]

I know the error is not caused by this gem, but how we can handle this? VIES global limit for Germany is a joke, wondering if there's an alternative provider we can connect to?

[yolk]

I am not aware of any alternative provider, and it IMO wouldn't make sense to offload/cache the data elsewhere; because the only authority in this regard are the official – and yes somewhat awkwardly limited – german servers.

So the only way to handle this is to simply keep retrying the request.