Data Loader Guide

About Data Loader
When to Use Data Loader
Install Data Loader
Configure Data Loader
Using Data Loader
Data Types Supported by Data Loader
Export Data
Define Data Loader Field Mappings
Insert, Update, or Delete Data Using Data Loader
Perform Mass Updates
Perform Mass Deletes
Upload Attachments
Upload Content with the Data Loader
Review Data Loader Output Files
Data Import Dates
View the Data Loader Log File
Configure the Data Loader Log File
Running in Batch Mode (Windows Only)
Command-Line Quick Start (Windows Only)
Data Loader Third-Party Licenses
PDF

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Perform Mass Deletes

Use the Data Loader to delete a large number of records at one time.
Available in: both Salesforce Classic (not available in all orgs) and Lightning Experience
Available in: Enterprise, Performance, Unlimited, and Developer editions

User Permissions Needed
To mass delete records: Modify All Data
  1. As a backup measure, export the records you wish to delete, being sure to select all fields. Save an extra copy of the generated CSV file.
  2. Next, export the records you wish to delete, this time using only the record ID as the desired criterion.
  3. Launch the Data Loader and follow the delete or hard delete wizard. Map only the ID column.
  4. After the operation, review your success and error log files.