Our app creates a new product via the API and then we immediately return this variantId to our POS UI Extension and add it to the cart. We have merchants who have been using our app for years without issue who began experiencing a weird bug recently where they would get a POS cart / checkout error …

From what we can tell based on our own testing, as of today it appears that the POS team and Catalog team got things sorted, so now if a product is published to the POS channel (but not the “All Retail” Catalog), it will still allow the product to check out as expected. With guidance from @Brian_Ed…

Here’s a photo a different merchant just sent of what happens when they try to save the cart (with the line item that cannot be checked out) and retrieve it as a Draft Order in POS. Something has seemingly broken / changed and is preventing products created by our app from being available to POS, t…

Hey @derrick thanks for flagging this! Just wanted to reach out to you here to let you know our product team is investigating this. Can’t guarantee a turnaround time, but either they or I will update you here once we have more info to share. Appreciate you reporting this, we’ll get this looked into…

Thanks @Alan_G . We just got off the phone with a merchant who, after they spoke with Shopify support for something unrelated to our app, believes it’s due to the introduction of a new Retail Catalog attribute / field, and our temporary products are missing this. Is this what’s going on? If so, how…

Hey @derrick would you be able to provide us with the query you use for creating the products and publishing them on POS?

@AndyC first we create the product with this mutation: mutation productCreate($productInput: ProductInput!) { productCreate(input: $productInput) { product { id title createdAt } userErrors { field message } } } { "productInput": { "title":…

We’ve identified a manual fix that works: Shopify Admin > Markets > Catalogs > All Retail > Check the box for Automatically include new products We appreciate your quick responses so far, but it’s been nearly 24 hours since we reported this, and we ended up learning about this workaround from one …

Hey @derrick , thanks for reaching out and reporting this. This one was caused by another feature unrelated to POS, I believe they’re working on fixing the root cause. As for your question about programatically setting the catalog when creating a product, I was told this by someone from that team: …

@JS_Goupil thanks for chiming in, good to hear from you! We also have very little context on the catalog stuff, but we can’t be the only app that programmatically creates products that a merchant later wants to check out on POS. Having to listen for catalog creation and then add this individually f…

Hey @derrick , just confirming that we did push a fix that should resolve this recently. Please let us know if you see the issue pop up again.

Can't add API-created product to POS cart affecting specific merchants

Extensions

derrick August 26, 2025, 12:37am 3

@Alan_G do you know what might be going on here? It seems to be affecting merchants across multiple Shopify POS versions, did something change or break in the product / publication API side?

POS Cart Transform lineUpdate completes successfully, but line item price unchanged and "Couldn't load checkout" error

Topic		Replies	Views
[POS] Products that are not available for POS, can be added to cart via POS Extensions Cart API Extensions pos-extensions	1	113	December 16, 2024
URGENT: Shopify POS 10.19.0 api.cart.addLineItem(variantId) has stopped working for newly-created variantIds Extensions pos-extensions	1	181	May 12, 2026
Shopify POS - intermittent "Not found" error in POS cart for newly-created items using addLineItem Extensions pos-extensions	5	155	May 1, 2026
POS UI Extensions (POS 11.11.x): cart writes resolve successfully but are not persisted — in some cases after the returned cart confirms them Extensions pos-extensions	5	105	August 26, 2026
When we create cart using storefront api, and if the product is not published on the sales channel, it did not show any error message Hydrogen and Storefront APIs storefront-api	1	151	March 5, 2025

Can't add API-created product to POS cart affecting specific merchants

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