WHAT CHANGED · SEPTEMBER 2026
What changed for Walmart suppliers, Sam’s Club suppliers, and Marketplace sellers: September 2026
Seven changes and deadlines to review this September, covering Marketplace integrations, holiday returns, catalog quality, and Sam’s Club data.
· Last checked
Covers through . Selected public updates reviewed for this issue.
The month in brief
Start with the September integration deadline if you use an approved Solution Provider. Then review the holiday return window, the changes that affect your fulfillment and catalog workflows, and the Sam’s Club announcement before making next year’s data plans.
This issue selects developments from August 1 through September 6, 2026, together with an earlier retirement whose deadline is still ahead. Dates beside entries distinguish announcements from a continuing requirement checked for this issue. The review covered public Marketplace, Data Ventures, and Walmart Connect sources. It identified no new first-party Walmart supplier or Walmart Connect release to include in this issue. Coverage is selective; use your account’s current requirements for operational decisions.
Checked · MARKETPLACE SELLER
Reconnect providers that still use delegated keys
Creation of new Delegated Access keys ended July 30. Existing keys for approved Solution Providers keep working only through the end of September 2026.
What to do. Ask each connected provider whether your account still uses a delegated key. If it does, reconnect through the Walmart App Store’s Connect action before the September cutoff, then confirm the integration is working. This entry’s date is the check date; it is not a new retirement announcement.
Delegated access authorization · How do you connect or reauthorize a solution provider in Walmart Seller Center?
Announced · MARKETPLACE SELLER
Buy Ship with Walmart labels inside ShipStation
ShipStation users can now purchase Ship with Walmart shipping labels within their existing fulfillment tool.
What to do. If you already ship through ShipStation, compare the eligible services and account-specific rates there before changing your label workflow. The announcement’s advertised savings are a maximum, not a guaranteed discount on every shipment.
Announced · MARKETPLACE SELLER
Plan for holiday returns into January
Most eligible Marketplace purchases made October 1 through December 31, 2026 can be returned through January 31, 2027. Product exceptions remain.
What to do. Review the items covered by the extension before setting your Q4 returns forecast and January staffing. Keep exception categories separate; do not assume every holiday sale receives the longer window.
Upcoming return window extension for the holiday season · What does Walmart Marketplace's holiday return window change for sellers in Q4 2026?
Announced · MARKETPLACE SELLER
Handle WFS multichannel tracking before carrier pickup
WFS Multichannel Solutions now supplies a Walmart Fulfillment Tracking Number when an order is created, plus an early tracking URL. Carrier tracking becomes available later.
What to do. Have your integration read the early tracking fields and use carrier tracking once assigned. Confirm whether each destination channel accepts the early identifier before relying on it for that channel’s tracking deadline.
Announced · MARKETPLACE SELLER
Update automotive setup without changing ACES requirements
Automotive item setup no longer uses AAIA Brand Id, Part Terminology Id, or Walmart Fitment Brand Code. Accurate Brand Name and manufacturer-published MPN still matter. The missing-attributes report is retired; the coverage report is temporarily unavailable.
What to do. Remove the retired setup fields from your item-maintenance process and adjust scheduled report pulls. Keep the existing ACES XML requirements when submitting compatibility data; the simpler item setup does not remove them.
Announced · SAM’S CLUB SUPPLIER
Treat Sam’s Club Scintilla as a 2027 planning item
Walmart plans to make Scintilla available to Sam’s Club merchants and suppliers beginning in 2027. The announcement does not specify a launch month, packages, pricing, or migration arrangements.
What to do. Ask for those details before committing to a data-tool transition. Base current reporting work on the access your Sam’s Club account already has; the announcement itself grants no new access.
Walmart to bring Scintilla to Sam’s Club in 2027 · Can I pull Sam’s Club member data in Scintilla?
Announced · MARKETPLACE SELLER
Review catalog quality in bulk
New Listing Quality and Content Quality report types let sellers and Solution Providers retrieve scores, issues, and recommended fixes through the on-request Reports API. Listing Quality is a snapshot accurate as of the previous day.
What to do. Ask your catalog team or provider to add the reports to its review workflow and prioritize the issues returned. Preserve the snapshot date when comparing results; this is not a live view of an item you just edited.
Listing Quality and Content Quality reports · Why is your Walmart Marketplace listing unpublished?