This SDK must not add business logic.
- Must consume
vatfix/VATFIX/schema/claim.schema.json - Must emit
vatfix/VATFIX/schema/result.schema.json - Must use failure codes from
vatfix/VATFIX/FAILURE_CODES.json - Must be a thin wrapper around VATFIX standards
- Custom validation logic
- Schema modifications
- Additional failure codes
- Business rule interpretation
SDK is a transport layer, not a decision layer.