'No such token' error upon submitting payment request to Stripe

Question

I'm setting up payments using the Stripe API to allow a user to log into their Stripe account on an iPad and accept payments from anyone. To do this, I'm using Stripe Connect to log them in and save their account id, then I'm using the STPPaymentCardTextField to obtain credit card details, then using the Stripe iOS SDK I'm submitting a card (with the test card info - 4242...) and getting back a token via createTokenWithCard. This successfully returns a token. At this point I need to submit that token along with the destination account id (provided to the app after the user logged in) and other info (currency, amount, etc) to my own server to submit the payment to Stripe. I have verified that information is being submitted and forwarded onto Stripe, but Stripe is returning an error:

{ type: 'invalid_request_error',
app[web.1]:      message: 'No such token: tok_13vxes2eZkKYli2C9bHY1YfX',
app[web.1]:      param: 'source',
app[web.1]:      statusCode: 400,
app[web.1]:      requestId: 'req_7AIT8cEasnzEaq' },
app[web.1]:   requestId: 'req_7AIT8cEasnzEaq',
app[web.1]:   statusCode: 400 }

If we submit the credit card info directly, avoiding the token altogether, the payment succeeds. Something is wrong with this token, and we are not sure why it is failing. What could be going wrong here?

[[STPAPIClient sharedClient] createTokenWithCard:card completion:^(STPToken *token, NSError *error) {
    //submit tokenId and other info to 'charge' endpoint below
}

NodeJS:

app.post('/charge', (req, res, next) => {
  stripe.charges.create({
    amount: req.body.amount,
    currency: req.body.currency,
    source: req.body.token,
    description: req.body.description,
    destination: req.body.destination
  }, (err, charge) => {
    if (err) return next(err)
    res.json(charge)
  })
})

Answer 1

Are you sure you're using the same API keys on your server and client?
Your server should be using your (live/test) secret key, and your iOS app should be using your (live/ test) publishable key as mentioned here on Stripe Testing.