Overview

Amazon's Inventory Loader is a flat file template that allows sellers to add, update, and manage product listings in bulk. Rather than creating listings one at a time through Seller Central, the Inventory Loader lets you upload a simple tab-delimited spreadsheet to match your products against existing catalog entries. For sellers managing dozens or hundreds of SKUs, this tool can dramatically reduce the time spent on listing management.

Key Points / What Sellers Need to Know

• Bulk listing management — The Inventory Loader file template enables you to add listings to existing products in Amazon's catalog using a single spreadsheet upload, saving significant time compared to manual entry.
• Tab-delimited format required — The file must be saved as a tab-delimited text (.txt) file before uploading, not as a standard Excel or CSV file.
• Product identifiers are essential — Each listing needs a valid product identifier (ASIN, UPC, ISBN, or EAN) so Amazon can match your offer to the correct catalog product.
• Price and quantity determine buyability — Products without a price or quantity cannot be purchased by customers, so these fields should always be populated for active listings.
• FBA sellers skip quantity — If you use Fulfillment by Amazon, you should not enter a quantity in the template. Instead, provide a fulfillment center ID in the designated column.

How the Inventory Loader Works

The Inventory Loader follows a straightforward three-step process. First, download the Inventory Loader file template from Seller Central. Open the template and navigate to the data entry tab, where you will enter your SKU, product identifier, and listing details for each product you want to offer. After filling in your data, review it carefully and save the file as a tab-delimited text file. Finally, navigate to the upload section in Seller Central and submit your completed spreadsheet. Amazon will process the file and either create or update your listings based on the information provided.

Required and Recommended Fields

While not every field in the Inventory Loader is technically required, Amazon strongly recommends providing as much information as possible. Skipping optional fields can lead to poor product descriptions and make your listings harder for customers to find. The core fields include: (your unique alphanumeric identifier for tracking inventory, which must be unique across all your listings), (the industry-standard identifier such as UPC, ISBN, ASIN, or EAN), (a numeric code indicating which type of identifier you used — 1 for ASIN, 2 for ISBN, 3 for UPC, 4 for EAN), (a numeric code from 1 to 11 representing conditions ranging from new to refurbished), (the per-item price in US dollars without currency symbols), and (the number of units available, between 1 and 1,000, required for seller-fulfilled products).