Overview

Managing bulk edits and SKU or inventory adjustments efficiently is essential for sellers handling large catalogs and multiple variations.
3Dsellers provides powerful bulk editing tools and CSV-based inventory updates that allow you to update prices, quantities, SKUs, and variations at scale—while keeping inventory accurate across all listings.

This guide explains:

Bulk edit limits and best practices
How to manage variations using SKUs
When and how to use CSV updates for large inventory changes
Common validations, constraints, and troubleshooting tips

For very large updates (hundreds or thousands of listings), CSV updates are strongly recommended.

🔧 Understanding Bulk Editing Limits

Bulk editing allows you to update multiple listings at once, but it has operational limits designed to ensure system stability and performance.

📌 Maximum Listings per Bulk Edit

200 listings per operation
You can perform multiple bulk edit operations, but each action is capped at 200 listings

Note: the 200-listing limit applies per action, not per day.

ℹ️ Best practice:

Break large updates into organized batches (by category, status, account, or channel).

👉 To efficiently group listings before bulk editing, use Segments:
How to Use Segments and Custom Segments in 3Dsellers Listing Tool

👉 For detailed bulk edit steps, see:
Using Listings Bulk Actions: Bulk Edit & Manage Listings in 3Dsellers

The Listing Tool allows you to select up to 200 listings at a time and apply bulk actions using the Bulk Actions menu.

✏️ What Can Be Bulk Edited

Common bulk edit actions include:

Listing status (Active, Draft, Ended)
Prices and quantities
Categories and attributes
Shipping and fulfillment settings
Tags and custom fields
Inventory sync from Product Catalog

⚠️ If you need to update more than 200 listings or perform SKU-level inventory changes, use CSV updates instead.

🧩 Managing Variations Using SKUs

SKU-based management is essential when working with variations across multiple listings.

SKU Management Essentials

✅ Consistent SKU Assignment Across Listings

The same variation should use the same SKU across all listings
Example: All Pink variations → PINK-001

Why this matters:
It allows a single CSV update to change inventory across every listing using that SKU.

🔑 Unique SKUs Within a Single Listing

Each variation within a listing must have a unique SKU
Variations in different listings can share SKUs

Each variation must have a unique SKU within the same listing, while identical variations across different listings can share the same SKU.

📄 CSV Bulk Updates for Inventory Adjustments

CSV updates are the most efficient way to manage inventory across large numbers of listings and variations.

👉 For advanced CSV examples (price & inventory), see:
Update Values via eBay CSV – Edit Price & Inventory

📋 Required CSV Columns

Column	Description
`variation_sku`	Exact SKU used in listings
`quantity`	Inventory level (0 or higher)

Your CSV file must include variation_sku and quantity columns, with values matching listing SKUs exactly.

🔄 Step-by-Step: CSV Inventory Update

Step 1: Identify Variations

Identify which variations need updates
Confirm their exact SKUs
Decide target inventory quantities

Step 2: Create the CSV File

Open Excel or Google Sheets
Create columns: variation_sku, quantity
Add one row per SKU
Save as CSV

Step 3: Upload the CSV

Go to Listing Tool
Select CSV Import / Update Active Values / Update Inventory
Upload your file
Review the CSV mapping
Click Start Import
Wait until the update is complete and check the status to see if everything has been updated successfully.