> For the complete documentation index, see [llms.txt](https://docs.hotwax.co/documents/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.hotwax.co/documents/learn-shopify/shopify-reference/order-cancellation/partial-order-cancellation.md). # Partial Order Cancellation Learn how to handle partial order cancellations in Shopify and their updates in HotWax Commerce. Partial cancellation removes a subset of an order's unfulfilled items or quantities. Other items can remain open or may already be fulfilled. Check the affected lines and quantities rather than using the order's overall status as proof of cancellation. ## Importing the update OMS order sync processes Shopify refund details and distinguishes cancellation from returns and refunds without line items. Refund line details, return context, restock type, and unfulfilled quantities determine the processing path. When the outcome is cancellation, OMS matches the refund line IDs and quantities to eligible unfulfilled items. See [Order download](/documents/learn-shopify/shopify-reference/orders/order-download.md) for the order-sync entry paths. Confirm the affected shop, order and line identifiers, import window, and latest processing result before recovery. ## Verifying the affected items In OMS, cancellation processing selects matching items in `ITEM_CREATED` or `ITEM_APPROVED` status. Completed items are excluded from that cancellation pool. A refund amount by itself does not establish that an item was canceled; refund line details, return context, and fulfillment state determine the processing path. Compare the Shopify line quantities with the affected OMS item statuses and cancellation history. Check the other lines and the overall order separately: canceling one item does not establish that the whole order was canceled. See the [cancellation eligibility diagram](/documents/learn-shopify/shopify-reference/order-cancellation/complete-order-cancellation.md#from-shopify-cancellation-to-oms-item-status) for the import, matching, and verification steps. If the affected items remain open, check the import window, order and line mapping, eligibility, and processing outcome before recovery. Keep cancellation of unfulfilled quantities separate from the return of completed quantities. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation by asking a question. Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters: ``` GET https://docs.hotwax.co/documents/learn-shopify/shopify-reference/order-cancellation/partial-order-cancellation.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.