---
id: CFG-11
family: GR-CFG
level: core
profiles: [storage-api]
posture: normative-target
added: "1.0"
changed: "1.0"
source: https://flowdrop.io/spec/rules/gr-cfg/cfg-11
specification: FlowDrop Workflow Specification 1.0-draft
licence: CC BY 4.0
---

# CFG-11 — Type checking matches exactly and never coerces

*GR-CFG (Part I) · level: core · profiles: storage-api · added in 1.0*

## The rule

> **Normative.** This is the rule.
>
> 1. A `type` check compares the value against the named type exactly: a value of the wrong type fails, and is never coerced to make it pass.
>
> 2. A type name the implementation does not recognise passes rather than fails, so an unknown type never blocks a node from running.

## Related rules

- Names: CFG-10
- Referenced by: CFG-10, CFG-12

---

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.