Verification comes first
A sub-client exists as soon as you register it, and can do nothing until it is verified. That check is not a formality — it is the legal basis on which money can be held, and it is the step most likely to hold up an integration. When something is missing, Kira says exactly what, so you can collect it from your customer and send it on. Verification can also be re-run later if circumstances change.What a sub-client is not
A sub-client is not a person using your product, and not a login. It is the legal entity money belongs to. One sub-client may have many people acting for it; the model does not track them separately, beyond the individuals verification requires.