--- title: "Amazon Selling Partner API September listing attribute usage and enumeration value updates: 2026-09-28 | Harbyn" description: "Amazon Selling Partner API September listing attribute usage and enumeration value updates, effective Sep 28, 2026." canonical: "https://harbyn.com/changes/amazon-sp-api/2026-09-09-september-updates-to-listing-attribute-usage-and-enumeration-values" last-updated: 2026-10-08 --- # Amazon Selling Partner API September listing attribute usage and enumeration value updates Markdown version of . Breaking change - Amazon Selling Partner API. high severity. In effect. History: recorded after the fact. Effective September 28, 2026, Amazon updated 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 now requires values for newly added required attributes. Product-only listings and XSD or XML feed uploads are not affected. The deadline passed on Sep 28, 2026. ## Facts | Fact | Value | | --- | --- | | Vendor | [Amazon Selling Partner API](https://harbyn.com/vendors/amazon-sp-api.md) | | Kind | Breaking change | | Severity | high | | Status | In effect | | Announced | Sep 9, 2026 | | Effective | Sep 28, 2026 | | Added to Harbyn | Oct 8, 2026 | | Lead time | Recorded after the fact: added 10 days after the deadline | | 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 2026-10-08 17:16 UTC, sha256 `6709f9d0c4b11424236cdb15f8cf8b1cf78a50d776140ca1caf187d92c944d53`) ## Related changes ### More from Amazon Selling Partner API - [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) - [October listing attribute usage and enumeration value updates](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.md) (Breaking change, effective Oct 26, 2026) - [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) - [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)