# Package IDs

When you work with packages using the CLI, the package IDs refer either to a unique package or a unique package version.

The relationship of package version to package is one-to-many.

| ID Example      | Description                 | Used Where                                                                                                                                                                                                   |
| --------------- | --------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| 033xx00000007oi | Metadata Package ID         | Generated when you create a package. A single package can have one or more associated package version IDs. The package ID remains the same, whether it has a corresponding beta or released package version. |
| 04tA000000081MX | Metadata Package Version ID | Generated when you create a package version.                                                                                                                                                                 |