Walmart Marketplace upload repair
Walmart 5.0: new required fields your 4.x feed is missing
Applies to: MP_ITEM, MP_MAINTENANCE
What causes this error
Several attributes are new in 5.0 and required where they didn't exist in 4.x — for example isProp65WarningRequired and revised warranty/small-parts fields. A 4.x-shaped file is missing these columns entirely and fails on upload.
How to fix it
Option A: fix it manually
- List the 5.0 required attributes for each product type you sell.
- Identify which are new versus 4.x and absent from your current file.
- Add the new columns and populate valid values (mind any conditional rules they trigger).
- Re-upload against the 5.0 spec.
Option B: fix it automatically
The fixer can identify the exact row and field, but you may need to provide the final seller-specific value.
Auto-fixer launching soon
We're building a tool that fixes this error automatically. Upload your file, download a corrected one, and get notified when it's live.