Rules

FP502 · expression-parse-error

A `${{ }}` expression (or an `if:` condition) cannot be parsed.

Code	Name	Category	Default severity
`FP502`	`expression-parse-error`	Env & expressions	🔴 error

Why it matters

GitHub rejects the workflow when it is triggered, or fails the step that contains the expression.

Fix the syntax: strings use single quotes, == for equality, and every $\{\{ needs a closing \}\}.

if: ${{ inputs.mode = "release" }}

Change the severity (or turn the rule off) in .github/flowpact/flowpact.config.yml, by code or by name:

.github/flowpact/flowpact.config.yml

rules:
  FP502: off
  # or: expression-parse-error: error

Explain it in the terminal:

flowpact explain FP502

FP501 · undefined-env-ref

`${{ env.NAME }}` reads a variable that is not defined at workflow, job or step level, nor written to `$GITHUB_ENV` earlier.

FP503 · schema-violation

The file does not match GitHub’s workflow / action schema (validated with GitHub’s own parser).