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# Deprecations

> Index of all deprecations introduced in Platform 6 and Platform 6.1.

This page lists all features and APIs deprecated in the Platform 6 release series. Deprecated items may still function but are scheduled for removal in a future release unless otherwise noted. Items marked as **Removed** are no longer available.

| Version | Deprecation                                                                                                                            | Status                | Description                                                                                                                                                                 |
| ------- | -------------------------------------------------------------------------------------------------------------------------------------- | --------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| 6.0     | [Automation Catalog](/itential-platform/release-notes/deprecations/automation-catalog)                                                 | Removed               | Automation Catalog has been fully removed. Automations not yet migrated to Operations Manager will be lost on upgrade.                                                      |
| 6.0     | [Delete Variables API](/itential-platform/release-notes/deprecations/delete-variables-api)                                             | Removed               | The `deleteVariables` API has been removed. Use `updateGoldenConfigTreeVersion` instead.                                                                                    |
| 6.0     | [ENC encryption (global key)](/itential-platform/release-notes/deprecations/enc-encryption)                                            | Replaced              | The legacy `$ENC` global encryption key has been replaced with a server-specific custom encryption key. Existing encrypted strings require migration before upgrading.      |
| 6.0     | [OperationId tasks](/itential-platform/release-notes/deprecations/operationid-tasks)                                                   | Removed               | Twelve `operationId` tasks have been removed from Platform 6.                                                                                                               |
| 6.0     | [Pre-Built Wizard, Pre-Built Promotion, and App-Artifacts](/itential-platform/release-notes/deprecations/pre-builts)                   | Deprecated            | No longer maintained as of Platform 6. Migrate to projects or use alternative installation methods. Pre-builts installed before upgrading continue to function.             |
| 6.0     | [Profiles](/itential-platform/release-notes/deprecations/profiles)                                                                     | Deprecated            | Profiles are deprecated in favor of environment variables and a `platform.properties` file. The `switchActiveProfile` API and UI-based profile switching have been removed. |
| 6.0     | [Retrieve references endpoint (`/references-to`)](/itential-platform/release-notes/deprecations/retrieve-references-endpoint-replaced) | Replaced              | Replaced by the `/discoverReferences` endpoint, which provides a wider range of reference discovery functionality.                                                          |
| 6.0     | [Server name property (`serverName`)](/itential-platform/release-notes/breaking-changes/server-name-property-replaced)                 | Replaced              | Replaced by `serverId` in `properties.json`.                                                                                                                                |
| 6.1     | [Dual-format integration responses](/itential-platform/release-notes/deprecations/reduced-integration-responses)                       | Scheduled for removal | The dual JSON and plain text response format will be replaced by a single response format determined by the `Content-Type` HTTP header in Platform 6.1.                     |