php - Venmo - Braintree payment - Server Integration -

Using Wenmou Touch, I verify client side and post encrypted credit card details on our application server.

The application server retrieves the parameters within the post method, and posts the retrieved parameter to the Braintree server.

  & lt ;? Php $ result = Braintree_Transaction :: sale (array ('amount' = & gt; '10 .00 ',' credit_card '=> array (' number '= & gt; $ _POST [' encrypted_card_number '],' expiration $ '_POST [' encrypted_expression_moth '],' end time ' ['Venmo_sdk_session']))) ;; & Gt;   
 If we ignore the 'Options' tag, the payment is successful, after starting the 'Options' array with the  element  venmo_sdk_session , the braintree Server does not respond.   
 I suspected the key spelling / case sensor "venmo_sdk_session".   
 
 
 The problem is not within the code.  
 We need to enable Venmo    Touch Payment Method Verification on the Brentity Site's Settings screen.