Fission-AI/OpenSpec · error · SchemaValidationError

Duplicate artifact ID: ${artifact.id}

Error message

Duplicate artifact ID: ${artifact.id}

What it means

Error "Duplicate artifact ID: ${artifact.id}" thrown in Fission-AI/OpenSpec.

Source

Thrown at src/core/artifact-graph/schema.ts:54

  validateNoDuplicateIds(schema.artifacts);

  // Check that all requires references are valid
  validateRequiresReferences(schema.artifacts);

  // Check for cycles
  validateNoCycles(schema.artifacts);

  return schema;
}

/**
 * Validates that there are no duplicate artifact IDs.
 */
function validateNoDuplicateIds(artifacts: Artifact[]): void {
  const seen = new Set<string>();
  for (const artifact of artifacts) {
    if (seen.has(artifact.id)) {
      throw new SchemaValidationError(`Duplicate artifact ID: ${artifact.id}`);
    }
    seen.add(artifact.id);
  }
}

/**
 * Validates that all `requires` references point to valid artifact IDs.
 */
function validateRequiresReferences(artifacts: Artifact[]): void {
  const validIds = new Set(artifacts.map(a => a.id));

  for (const artifact of artifacts) {
    for (const req of artifact.requires) {
      if (!validIds.has(req)) {
        throw new SchemaValidationError(
          `Invalid dependency reference in artifact '${artifact.id}': '${req}' does not exist`
        );
      }

View on GitHub (pinned to 6926ccb18a)

When it happens

Trigger: Thrown at src/core/artifact-graph/schema.ts:54 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of Fission-AI/OpenSpec@6926ccb18a (2026-08-25). Data as JSON: /api/errors/f3528dc50da7efa3. Report an issue: GitHub.