SCH001 - Schema Not Loaded

Description

The JSON Schema validator could not load a schema for validation. This typically occurs when the schema file is missing, corrupted, or the schema version is not supported.

Severity

Warning

When This Occurs

• Schema file not found in the expected location
• Schema version not supported by the validator
• Offline mode without cached schemas

Example

{
  "@context": ["https://www.w3.org/ns/credentials/v2"],
  "type": ["VerifiableCredential", "DigitalProductPassport"],
  "credentialSubject": {
    "product": { "name": "Test Product" }
  }
}

If no schema is available, validation continues but schema-level checks are skipped.

Resolution

1. Ensure schema files are present:

dppvalidator doctor

1. Update schema cache:

dppvalidator validate --update-schemas document.json

1. Check schema version compatibility:

from dppvalidator import ValidationEngine

engine = ValidationEngine()
print(f"Supported versions: {engine.supported_schema_versions}")

Related

• Seven-Layer Validation