---
id: SCH-20
family: GR-SCHEMA
level: extended
profiles: [storage-api, editor-client]
posture: normative-target
added: "1.0"
changed: "1.0"
source: https://flowdrop.io/spec/rules/gr-schema/sch-20
specification: FlowDrop Workflow Specification 1.0-draft
licence: CC BY 4.0
---

# SCH-20 — Visual type is the node type's, and is offered where there is a choice

*GR-SCHEMA (Part I) · level: extended · profiles: storage-api, editor-client · added in 1.0*

## The rule

> **Normative.** This is the rule.
>
> 1. A node's visual type comes from its node type, never from a declared schema.
>
> 2. Where the node type supports more than one visual type, a reserved `nodeType` string property is written into the config schema (its `enum` the supported types, its `default` the node type's own visual type), and the same value is stored as that key's config default.
>
> 3. This write is unconditional: it overwrites a declared property of the same name.

## Related rules

- Names: SCH-21
- Referenced by: SCH-21

---

Rule identifiers are permanent and are never renumbered. This specification carries
no implementation status: each implementation publishes its own standing against
these rules. Licensed CC BY 4.0.