Reporting the same problem. Using Play Services 8.4.0, IAB v3. A purchase made with promo code via the in-app purchase flow, always returns an empty string as payload, preventing any kind of payload verification.
I consider this a high priority issue since there is no way as of now to know if a purchase has been made via promotion, so we are forced either not to distribute codes or to turn down payload verification completely. -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/android-developers. To view this discussion on the web visit https://groups.google.com/d/msgid/android-developers/c9b4153b-8f03-4aad-bfc7-b9f7851ddddb%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
