The user is not able to open a Change Control on a document classified under a specific Document Type.
The affected Document Type is not configured correctly.
The solution is to ensure that the Create Draft requires Change Control option is selected in the configuration for the affected Document Type. This setting is enabled on all Sub-types and Classifications that are under the Document Type. This setting does not automatically propagate to child types when it is enabled at the Document Type level.
- Vault Change Control Documentation: About Single-Document Change Control (QualityDocs)
- Vault Admin Documentation: Configuring Document Types