Android custom card com.braintreepayments.api.exceptions.AuthorizationException for sandbox environment

[denisSmirnovDev]

After successful setup unable to get nonce for custom.

XPLATlient.setup(braintreeDemoToken)
.then(function (success) {
console.log('XPLATlient setup success', success);
})
.catch(function (err) {
console.log('XPLATlient setup err', err);
//error handling
});

const card = {
number: "4111111111111111",
expirationDate: "10/20", // or "10/2020" or any valid date
cvv: "400",
}

XPLATlient.getCardNonce(card)
.then(function (nonce) {
console.log('XPLATlient nonce', nonce);
})
.catch(function (err) {
console.log('XPLATlient err', err);
//error handling
});

In the react console nor success nor errors.
After debagging android code figured out that Braintree lib give exception:
com.braintreepayments.api.exceptions.AuthorizationException: You are unauthorized to perform input validation with these authentication credentials.

Debuger point on the:
@OverRide
public void failure(Exception exception) {
fragment.postCallback(exception);
fragment.sendAnalyticsEvent("card.nonce-failed");
}

Exception in postCallback from the BraintreeFragment.

[denisSmirnovDev]

mArgument in that fragment: Bundle[{com.braintreepayments.api.EXTRA_INTEGRATION_TYPE=custom, com.braintreepayments.api.EXTRA_SESSION_ID=555b135dbbab4a12958a9037d3a492e8, com.braintreepayments.api.EXTRA_AUTHORIZATION_TOKEN=}]

[denisSmirnovDev]

Found whats wrong.
Problem with validation.
In the Braintree.java (this library):

CardBuilder cardBuilder = new CardBuilder() .validate(true);

in the getCardNonce method
I set it to false and now working fine.
I hope it is help if somebody get same error.

Also the question It is related with sandbox environment?
Somebody had validation works with production environment?

[harleenarora]

I set to false
CardBuilder cardBuilder = new CardBuilder() .validate(false);

Still not working.