@matigo Indeed… Unfortunately we need to use an API that is not even provided by our customer to whom we do the mobile apps for, instead it comes from their banking core provider the customer has partial ownership of. Then the API is just in principle a simple proxy layer that fetches data from the different backend services, so the issue might be that the backend service itself does not provide the needed data in the first place. Not the first (and very likely not the last) time we have to deal with this kind of bullshit…