First-Generation Managed Packaging Developer Guide

First-Generation Managed Packages
Why Switch to Second-Generation Managed Packaging?
Move to 2GP: Migrate Your Managed Packages with Ease
About Package Conversion and Package Migration
Three Phases of Package Migration Development
Plan Your Package Migration
Before You Begin Package Migrations
Convert Your Managed 1GP Package to 2GP
Migrate Your Subscribers from 1GP to 2GP
Move to 2GP Package Development
Considerations for Package Migrations
Troubleshoot Package Conversion Failures
Register a Namespace for a First-Generation Managed Package
Create a First-Generation Managed Package Using a UI
Create a First-Generation Managed Package using Salesforce DX
Components Available in First-Generation Managed Packages
Behavior of Specific Metadata in First-Generation Managed Packages
Package and Test Your First-Generation Managed Package
Update Your First-Generation Managed Package
Publish Upgrades to First-Generation Managed Packages
Manage Licenses for Managed Packages
Manage Features in First-Generation Managed Packages
AgentExchange App Analytics for First-Generation Managed Packages
Developing and Distributing Unmanaged Packages
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Note: This release is in preview. Features described here don’t become generally available until the latest general availability date that Salesforce announces for this release. Before then, and where features are noted as beta, pilot, or developer preview, we can’t guarantee general availability within any particular time frame or at all. Make your purchase decisions only on the basis of generally available products and features.

Move to 2GP: Migrate Your Managed Packages with Ease

Are you still using first-generation managed packaging (1GP) for your package development work? If so, you're not alone. Many ISVs like you are looking to move to second-generation managed packaging (2GP) and take advantage of its many benefits.

If you don't have customers who are still using 1GP packages you created, you can skip this chapter and move straight to learning how to build new 2GP packages.

Package migration involves two main steps: converting an existing 1GP package into a 2GP package, and then migrating the 2GP package into a subscriber org. Package migration won't change your package's metadata, or disrrupt any subscriber data associated with your package.