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• Tags do NOT belong to the metadata and thus do not need to be defined in the schema.
• Tags are stored together with the object as value for the property 'system:tags' similar to metadata.
• Pure tag operations do NOT lead to the creation of a new object version.
• Tags can only be attached to the current version of an object, whereas previous versions cannot have tags.
• For version-specific information, metadata provide the suitable options. They have to be defined in the schema.

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• Retrieve object tags by ID – GET GET /api/dms/objects/{objectId}/tags
• Add object tag by ID – POST POST /api/dms/objects/{objectId}/tags/{name}/state/{state}
• Update object tag by ID – POST POST /api/dms/objects/{objectId}/tags/{name}/state/{state}?overwrite=true
• Delete object tag by ID – DELETE DELETE /api/dms/objects/{objectId}/tags/{name}
• Add/update object tag by search query – POST POST /api/dms/objects/tags/{name}/state/{state}?query=<SQL>

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