---
id: SCH-21
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-21
specification: FlowDrop Workflow Specification 1.0-draft
licence: CC BY 4.0
---

# SCH-21 — The reserved config properties every node carries

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

## The rule

> **Normative.** This is the rule.
>
> 1. `instanceTitle` and `instanceDescription` are injected into every node's config schema; `maxRetries` and `ports` into an executable node's config schema only.
>
> 2. Each injection is skipped where the node type already declares a property of that name.

## Related rules

- Names: SCH-20
- Referenced by: SCH-20, SCH-23

---

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.