Second-Generation Managed Packaging Developer Guide

Second-Generation Managed Packages
What’s a Second-Generation Managed Package?
Set Up Your Development Environment
Before You Create Second-Generation Managed Packages
Scratch Orgs and Package Development
Workflow for Second-Generation Managed Packages
Components Available in Second-Generation Managed Packages
Behavior of Specific Metadata in Second-Generation Managed Packages
Develop Second-Generation Managed Packages
Install and Uninstall Second-Generation Managed Packages
Use the CLI to Install a Second-Generation Managed Package
Use a URL to Install a Second-Generation Managed Package
Install Notifications for Unauthorized Managed Packages
Upgrade a Second-Generation Managed Package Version
Resolve Apex Test Failures
Run Apex on Package Install/Upgrade
Customize Second-Generation Managed Package Installs and Uninstalls Using Scripts
Sample Script for Installing Second-Generation Managed Packages with Dependencies
Uninstall a Second-Generation Managed Package
Prepare to Distribute Your Second-Generation Managed Package
Push a Package Upgrade for Second-Generation Managed Packages
Advanced Features for Second-Generation Managed Packages
Best Practices for Second-Generation Managed Packages
Manage Licenses for Managed Packages
Manage Features in Second-Generation Managed Packages
Get Started with AppExchange App Analytics
Gaps Between First-Generation and Second-Generation Managed Packaging
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Upgrade a Second-Generation Managed Package Version

A package upgrade occurs when you install a new package version into an org that has a previous version of that package installed.

When you perform a package upgrade, here’s what to expect for metadata changes.

  • Metadata introduced in the new version is installed as part of the upgrade.
  • Metadata modified in the new version is updated as part of the upgrade.
  • Metadata removed in the new version is either deprecated or deleted as part of the upgrade.

To upgrade a package, use the package install CLI command 

1sf package install --package 04t... --target-org me@example.com

For more examples and details about this command, see package install in the Salesforce CLI Command Reference.

Beta packages aren’t upgradeable. To install a new beta package or released version, first uninstall the beta package.

To upgrade a package version, the new version must be a direct descendent of the package version installed in your org. See Specify a Package Ancestor in the Project File for a Second-Generation Managed Package for more information.