--- title: "Amazon Selling Partner API October listing attribute usage and enumeration value updates: 2026-10-26 | Harbyn" description: "Amazon Selling Partner API October listing attribute usage and enumeration value updates, effective Oct 26, 2026." canonical: "https://harbyn.com/changes/amazon-sp-api/2026-10-14-sp-api-updates-new-listings-items-api-ivp-values-in-eu5-jp-and-ca-stores-oct-2" last-updated: 2026-10-15 --- # Amazon Selling Partner API October listing attribute usage and enumeration value updates Markdown version of . Breaking change - Amazon Selling Partner API. high severity. Announced. Upcoming. Effective October 26, 2026, Amazon updates attribute usage and enumeration values for numerous product types across Amazon stores. Creating or editing products with offers through the Listings Items API v2021-08-01 or the JSON\_LISTINGS\_FEED feed type will require values for newly added required attributes. Product-only listings and XSD or XML feed uploads are not affected. 1 days left: the deadline is Oct 26, 2026. ## Facts | Fact | Value | | --- | --- | | Vendor | [Amazon Selling Partner API](https://harbyn.com/vendors/amazon-sp-api.md) | | Kind | Breaking change | | Severity | high | | Status | Announced | | Announced | Oct 14, 2026 | | Effective | Oct 26, 2026 | | Added to Harbyn | Oct 15, 2026 | | Lead time | 11 days of warning | | Vendor page | | | Review | Reviewed by a person, extracted by a model | ## Find it in your code ```sh npx harbyn scan ``` This change names no identifier the scanner can match line by line, so the scan tells you whether your repository uses Amazon Selling Partner API, from its packages and API hosts. Nothing leaves your machine. ## Sources Where this event comes from: the page we read, when we read it, and the hash of that snapshot. - (changelog, fetched 2026-10-15 04:48 UTC, sha256 `7731a5e1f5f596c33bd0a1bb2225d7a5fba5d1f33831a4fb0e6c59c73810bae9`) ## Related changes ### More from Amazon Selling Partner API - [ORDER\_CHANGE notifications add PreFulfillmentStatusChange for Amazon Autos](https://harbyn.com/changes/amazon-sp-api/2026-10-14-sp-api-updates-new-listings-items-api-ivp-values-in-eu5-jp-and-ca-stores-oct-3.md) (Behavior change, effective Oct 28, 2026) - [Merchant Fulfillment API adds two DeliveryExperience enum values](https://harbyn.com/changes/amazon-sp-api/2026-09-16-new-enum-values-for-domestic-shipments-in-the-germany-amazon-store.md) (Behavior change, effective Oct 1, 2026) - [September listing attribute usage and enumeration value updates](https://harbyn.com/changes/amazon-sp-api/2026-09-09-september-updates-to-listing-attribute-usage-and-enumeration-values.md) (Breaking change, effective Sep 28, 2026) - [Finances API v0 financial events operations removed on August 27, 2027](https://harbyn.com/changes/amazon-sp-api/2025-07-21-finances-api-v0-operations-deprecated.md) (Retirement, effective Aug 27, 2027) ### Changes at other vendors - [Supabase: four CBC-mode TLS 1.2 cipher suites will be removed from project HTTP APIs](https://harbyn.com/changes/supabase/2026-10-12-an-outdated-subset-of-tls-1-2-ciphers-will-be-disabled-on-project-http-apis.md) (effective Nov 10, 2026) - [Google Workspace APIs: OAuth clients must be marked as agentic to call Google Workspace MCP servers](https://harbyn.com/changes/google-workspace/2026-10-12-oauth-clients-must-be-marked-as-agentic-to-call-google-workspace-mcp-servers.md) (effective Nov 11, 2026) - [Bitbucket Cloud API: Git Credential Manager upgrade required for OAuth 2.0 Git authentication](https://harbyn.com/changes/bitbucket/2026-10-13-git-credential-manager-upgrade-required-for-oauth-2-0-git-authentication.md) (effective Nov 30, 2026) - [LinkedIn Marketing API: Publisher lists require a surface field](https://harbyn.com/changes/linkedin/2026-10-14-publisher-lists-require-a-surface-field.md) (effective Dec 15, 2026) [All upcoming deadlines](https://harbyn.com/deadlines.md)