Skip to main content



This rule belongs to the swagger-v2-standards-validation ruleset and states that:

If an enumeration list is declared using the enum property for the schema object, it must contain at least one element which can be used for substitution i.e. the enumeration array must not be empty.

Maximum SeverityError
MessageSchema Object enum array is empty.
Rule SystemSemantic
Broad CategorySchemas
Products ImpactedAPI Transformer, Code Generation, Developer Experience Portal
Tagsswagger2 swagger standards semantic validation enum schema arrays json schema validation json schema

Suggested Fixes

  • Ensure that the enum array is not empty.
  • If substitution options are not known beforehand or are not expected to be limited to a specific set of values, remove the enum property declaration.

For More Information