---
id: CFG-10
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-10
specification: FlowDrop Workflow Specification 1.0-draft
licence: CC BY 4.0
---

# CFG-10 — A resolved value is validated against the parameter schema

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

## The rule

> **Normative.** This is the rule.
>
> 1. A resolved value that is not null is validated against the parameter's schema.
>
> 2. Any violation fails the node execution with a validation error carrying the name of the constraint that failed.
>
> 3. `type` and `enum` are checked first, and either one failing ends the check there.
>
> 4. A value that resolves to null is not validated at all; whether a null is acceptable is decided by `required` alone (CFG-9).

## Related rules

- Names: CFG-9, CFG-11, CFG-12
- Referenced by: CFG-9, CFG-11, 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.