[Solved] Updated to latest IAP - Now "duplicate transaction"

Monetization & Growth In-App Purchases
1

Unity IAP Store package 1.10.1 + Unity 5.6f3
We got IAP implemented quite some time and now upgraded to the latest version.
On Windows 10 Mobile, if I purchase one item, it works.
If I purchase another item (other ID), I get the purchase success callback, but I also get a “DuplicateTransaction” error.

If I restart the app, again the first purchase works, buying a second item triggers the error again (+ I get the item).

So it’s not that critical, but annoying for our paying users.

2

@mr_zog ,

This issue should be resolved as of the first patch of 5.6

The fix is also available in the following versions:
2017.1a5
5.5.3p1
5.4.5p2

3

Thanks for the info!

4

Reading through the changelog, I must note that the error occured for us with consumable IAPs! Is that fixed aswell?

  • (889321) - Purchasing: Fixed an issue with Unity IAP emitting DuplicateTransaction failure for all non-consumable purchases when initialized.
5

@mr_zog

The fix was specifically for non-consumables, but it’s possible that it resolved the issue for either case. If you still experience this issue, would you be able to provide the information requested here, either in a post or a support ticket: