IAP purchase fails in App Review sandbox — error alert shown to reviewer, 2.1(b) rejection

Getting 2.1(b) rejection. Reviewer sees "Purchase Failed" alert. Products configured correctly in ASC.

  1. Does App Review sandbox use same sandbox environment as developer testing?
  2. Can reviewer sandbox accounts trigger purchase failures that developer sandbox accounts cannot?
  3. Any known issues with first-time IAP products failing specifically during App Review sandbox session?
IAP purchase fails in App Review sandbox — error alert shown to reviewer, 2.1(b) rejection
 
 
Q