Is9153/9000

After i got a message 'IAP succeeded" with IAP_ERROR_NONE,

“IS9153/9000/NcqXyAWGex [Mode:Test]” Message keeps and
this message stops all of the game process,

so I am not able to check if consumeItem works properly in the OPERATION_MODE_TEST
what i missed?

it happened all the time, both first buy and second.

Seems like the issue could be caused due to not consuming an already purchased consumable item.

Call the GetOwnedList API at the start script of your game and then try to consume all consumable items in the OnGetOwnedList callback function. You should be able to purchase the product again afterwards.

This is a good reference implementation for Samsung IAP in unity: https://developer.samsung.com/sdp/blog/en/2021/05/17/integrating-samsung-iap-in-your-unity-game