# The marketplace readiness checklist: 21 things to fix before you list anywhere

> A working checklist covering catalog data, imagery, operations, and brand assets, the four areas every marketplace reviews, in the order they will find the gaps.

Category: Guides & Tips
Published: 2026-08-04
Canonical URL: https://www.osello.com/blog/oblg_1KmzdgvGff

Every marketplace, from Nordstrom to Macy's to Bloomingdale's to Target+, runs your brand through the same four filters: catalog data, imagery, operations, and brand assets. The names of the required fields change; the filters do not.

This is the checklist we run before taking any fashion brand into a new channel. Work through it honestly and you will know exactly how far you are from retail-grade, and where the weeks of delay are hiding.

## Catalog data

1. **Every SKU has a unique, stable identifier.** Marketplaces reject catalogs where SKUs change between uploads or duplicate across variants.
2. **GTINs/UPCs exist for every variant.** Most premium marketplaces require them. If you have never bought barcodes, that is a two-week lead time you want to start now.
3. **Parent/child structure is clean.** One parent per style, children per size and color. Catalogs that flatten every variant into standalone products fail category setup immediately.
4. **Titles follow a consistent formula.** Brand, style name, category, defining attribute. No ALL CAPS, no "NEW!", no keyword stuffing; premium marketplaces flag it.
5. **Descriptions are complete and honest.** Fabric content, fit notes, care instructions. Marketplace copy standards are closer to a catalog than an Instagram caption.
6. **Category-specific attributes are filled.** Sleeve length, rise, occasion, fabric weight. This is the single biggest source of item-setup delay: a typical apparel marketplace requires 20 to 40 fields per product, and your Shopify catalog probably holds a third of them.
7. **Size charts exist per category,** not one chart for the whole store.

## Imagery

8. **Primary images meet marketplace spec:** on-model or ghost, neutral background, minimum resolution around 1600px on the long edge.
9. **Every color variant has its own image set.** Swatch-only variants get rejected or buried.
10. **At least three angles per style,** plus a detail shot for anything with texture or hardware.
11. **No watermarks, no lifestyle-only sets, no borders or text overlays** on primary images.
12. **Image file naming maps to SKUs** so bulk upload does not become a manual matching project.

## Operations

13. **You can ship marketplace orders within the SLA,** usually one to two business days, every week of the year, including drop weeks.
14. **Inventory accuracy survives an audit.** If your Shopify counts drift from your warehouse counts, marketplace overselling will surface it within a month, and marketplaces suspend for it.
15. **Returns handling is defined.** Who pays, what window, what condition standards, and it matches the marketplace's minimum policy.
16. **Packing slips and labels can carry the marketplace's requirements,** not your DTC branding, where the channel demands it.
17. **Someone owns order issues.** A marketplace ticket that sits for three days becomes a metric that gets you demoted in search.

## Brand assets

18. **A brand book exists:** story, positioning, target customer, merchandising strategy, visual identity. It carries every application.
19. **Your price architecture is consistent across channels.** Marketplaces monitor; undercutting nordstrom.com on your own site sours the relationship fast.
20. **Your brand name is trademark-clean** in the marketplace's operating regions. Verification checks catch this.
21. **You know your assortment plan for the channel:** which styles, what depth, what launch cadence. Decide before item setup starts, not after.

## Scoring it

Most brands doing $1M to $20M pass operations, half-pass imagery, and fail catalog data, usually on items 3, 6, and 12. That is normal, and it is fixable in weeks rather than months when it is treated as a project with an owner.

The order matters, too: fix catalog data before imagery, and imagery before applications. A strong application that leads to a stalled item setup burns the channel relationship you just earned.