Amazon Flat File Bulk Listing
& Catalog Management
Scale faster, reduce errors, and keep your catalog spotless. As your Amazon Flat File Expert, Ecommarvel handles high-volume listing creation and precision catalog updates so you can launch SKUs, manage variations, and keep inventory accurate across multiple marketplaces with zero headache.
What this service does
- Bulk listing creation using Amazon flat file templates for any category and marketplace (US, EU, UK, AU, etc.).
- Create and map parent-child relationships and variation themes (size, color, style) correctly for better shopper experience and fewer listing issues.
- SKU structure design and SKU-to-ASIN mapping to keep your catalog organized and easy to manage.
- Mass price, inventory, and lead-time updates by SKU or SKU batch to prevent stockouts and oversells.
- Image URL mapping and image slot assignment so every listing shows the right photos.
- Product identifier handling (UPC, EAN, GTIN, ISBN) and ASIN reconciliation.
- Category-specific attribute filling – weights, dimensions, material, compliance fields, and required attributes to avoid rejections.
- Feed validation, dry-runs, and error resolution – we fix upload errors, suppressed listings, and attribute mismatches.
- Localized flat files for multi-country launches with marketplace-specific fields and translations.
- Scheduled bulk updates for prices, stock, and catalog changes.
- Catalog hygiene and clean-up – merge duplicates, fix bad variations, and remove suppressed or inactive SKUs on request.
- Training and handover – customized process docs or team training so your staff can manage bulk uploads confidently.
How we work
- Catalog audit – we review your current data, identify gaps, and recommend SKU and variation strategies.
- Template mapping – choose the correct Amazon flat file templates and map your data to required fields.
- Data clean-up – normalize titles, attributes, UPCs, dimensions, and images so feeds pass validation.
- Draft upload – perform a controlled test upload to catch errors before going live.
- Error resolution – fix all validation errors, suppressed fields, and category rejections.
- Final upload & verification – we push the final flat file, confirm live listings, and reconcile ASINs.
- Ongoing updates – scheduled bulk updates for price, inventory, and new SKUs.
Deliverables you’ll get
- Completed flat file(s) ready for upload and the final uploaded catalog.
- Error log with every issue found and fixed (with before/after snapshots).
- SKU mapping sheet (SKU – ASIN – marketplace – variation parent).
- Optional automation setup guide.
- Quick reference guide for your team to maintain the catalog going forward.
Perfect for
- Brands launching large catalogs or seasonal ranges.
- Wholesalers and distributors migrating many SKUs to Amazon.
- Private-label sellers who need fast, accurate bulk uploads.
- Agencies and ops teams that want reliable catalog support without the mistakes.
Why choose Ecommarvel
- Deep experience working with large spreadsheets and Amazon’s category templates – we know the quirks that break uploads.
- Precision-first approach – we validate every field, fix format issues, and remove hidden errors that cause listing suppression.
- Faster time-to-market for new launches thanks to batch uploads and proven templates.
- Fewer listing errors and support cases – we reduce manual back-and-forth with Seller Support.
- End-to-end catalog ownership – from raw supplier sheets to live Amazon listings that convert.
- Multi-marketplace expertise so your global expansion runs on a single, well-structured catalog.
A clean, well-structured catalog powers discoverability, reduces returns, prevents suppressed listings, and speeds up the launch of new products. As your Amazon Flat File Expert, Ecommarvel turns messy spreadsheets into error-free, live listings that sell.
Get a Free E-commerce Audit
We’ll get back to you within 24 hours with a personalized plan.
Ready to upload hundreds (or thousands) of SKUs
correctly the first time? Contact us and we’ll prepare
a custom flat-file plan for your catalog.
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