SOAP API Developer Guide

Getting Started
Introducing SOAP API
Quick Start
Step 1: Obtain a Salesforce Developer Edition Organization
Step 2: Generate or Obtain the Web Service WSDL
Step 3: Import the WSDL File Into Your Development Platform
Step 4: Walk Through the Sample Code
Object Basics
API Call Basics
Error Handling
Security and the API
Using the Partner WSDL
Reference
Using the API with Salesforce Features
Glossary
PDF

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Step 1: Obtain a Salesforce Developer Edition Organization

If you are not already a member of the Lightning Platform developer community, go to developer.salesforce.com/signup and follow the instructions for signing up for a Developer Edition organization. Even if you already have Enterprise Edition, Unlimited Edition, or Performance Edition, use Developer Edition for developing, staging, and testing your solutions against sample data to protect your organization’s live data. This is especially true for applications that insert, update, or delete data (as opposed to simply reading data).

If you already have a Developer Edition organization, verify that you have the API Enabled permission. This permission is enabled by default, but may have been changed by an administrator. For more information, see the help in the Salesforce user interface.