Setting line item discount on bulkCartUpdate API will crash the cart

Extensions
1

My production app is using POS UI Extension API version 2025-04.

When using the “bulkCartUpdate” function, if I include a line item discount , the cart will crash, making all items become zero price.

Here is the example input I used for bulkCartUpdate :

bug
bug2360×1640 280 KB

2

Any staff looking at this?

1 Like
4

Hey @soulchild, sorry for the delay. I’m looking in to this for you.

5

Any update on this? It’s been 3 months, and the issue still persists in the 2025-07 and 2025-04 API version

1 Like
7

Thanks for following up. I took another look and the issue is still open and with the correct team. I still don’t have a timeframe at this point. If you have additional context on the impact this is having, I am happy to pass that on as well to ensure we appropriately prioritize this.

8

Hi Kyle, Thank you for the reply.

There’s other existing API that can apply discount on cart item, but I really hope I can reduce one API call by just utilizing bulkCartUpdate function, so that the operation can be faster for customer. (Retail merchant usually are busy and every time saved count)

1 Like