SB-KEY-402The API account couldn't pay for this
What happened
The key is valid, but the provider declined the request for lack of funds.
What to do
Add billing on the provider's side, or remove the key with /removeapikey.
Still stuck?
The message that showed you this code also carries a short trace id — something like trace f3a9c2. Paste the whole footer line into the support server and your exact request can be looked at directly. Never paste an API key or private message content.