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title: Gaps Between First-Generation and Second-Generation Managed Packaging
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portal_url: https://docs.salesforce.com/developer/current/en-us/platform-pkg-exchange/managed_packaging/guides/second-generation/sfdx-dev-dev2gp-known-limitations.md
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---

# Gaps Between First-Generation and Second-Generation Managed Packaging

The following functionality is supported in first-generation managed packaging, and not yet supported in second-generation managed packaging. We’re working to address these feature gaps.

- Package versions can’t be deprecated.
- [Apex VersionProvider](https://help.salesforce.com/articleView?id=code_version_settings_apex.htm) isn’t supported.
- A default language for labels in packages can’t be specified.

See the [Metadata Coverage Report](https://developer.salesforce.com/docs/success/metadata-coverage-report/references/coverage-report/metadata-coverage-report.html), for the latest information on supported metadata types.