Create a New Variant for an Existing Document Type
As a founder or a trading partner, you can create multiple definitions or variants for a single document type. In each variant of a document type, you need to define its document schema, metadata template, simulator template, and presentation template whereas you create a single metadata schema, which is common across all the variants.
Note: You can neither delete system-defined document types nor modify their document schema . Other components of a system-defined document type can be changed but will require manual updates or upgrades to new versions. It is recommended to create a new variant for a system-defined document type if there is a need to modify the structure or one ore more of the type definitions
Results:
The new document type variant is added under in the VARIANTS list.
To modify the template schema, which is common for all the variants, you'll need to edit the document type. See Edit a Document Type.