title: In-app purchase multiple account conflict
body: <p>I have an application which have in-app purchase functionality </p>
  
  <p>Now there are 3 users say A, B and C</p>
  
  <p>A has login to play service so every purchase is going to be done by A's account.</p>
  
  <p>Now B login in my app and does a purchase for product 1 and enjoy his product but playservice has kept record that A has purchased 1 number product.</p>
  
  <p>Now C login in my app and tries to purchase product 1 but play service gives error that this product has already purchased as this time also the actual purchasing user will be play service logged in user that is A.</p>
  
  <p>What is the best flow for this type of condition?</p>
  
  <p>Please help.</p>