title: Amazon in-app purchase gives INVALID_SKU
body: <p>I am trying to implement amazon in-app purchase in Android for Kindle Fire. I read the instruction/documentation on the Amazon portal. I downloaded the sample code and it's working. After this, I implemented all the Amazon in-app purchase instructions in my app.</p>
  
  <p>I tested the app through <code>SDKTESTER.apk</code> updated the <code>JSON</code> <code>amazonSDKTESTER.json</code> file. The <code>SKU</code> in String file and the SKU in JSON are same.</p>
  
  <p>After running the app and PurchaseRequest, I received <code>PurchaseReponse</code>, but in the purchase response, it gives <code>INVALID_SKU</code>.</p>
  
  <p>Logcat message:</p>
  
  <pre><code>11-22 13:49:53.007: V/Amazon-IAP(6696): onPurchaseResponse recieved
  11-22 13:49:53.007: V/Amazon-IAP(6696): PurchaseRequestStatus:INVALID_SKU
  11-22 13:49:53.007: V/Amazon-IAP(6696): Invalid Sku for request hasGreenButton
  </code></pre>