Error codes for Verification Reports

Error codes are inspired by HTML status codes.

100 - JSON related errors

The errors in this category are based on the JSON specification, and on requirements how the input JSON is expected. These errors can apply on Annotations during the Annotation Validation, or on Domain Specifications during the Meta Validation.

Code	Error field	Name	Severity	Description
100	JSON	JSON related Error	Critical	Generic JSON related error.
101	Lexical - JSON	No JSON	Critical	The input is not valid JSON. - string that can not be represented as json
102	Lexical - JSON	No Data	Critical	The input is empty - null, empty object, "", undefined, []
103	Syntax - JSON	No Object	Critical	The input is not a JSON object - input should be an JSON object, and not an array of annotations, or something else

200 - JSON-LD related errors

The errors in this category are based on the JSON-LD specification, and on requirements how the input JSON-LD is expected. These errors can apply on Annotations during the Annotation Validation.

Code	Error field	Name	Severity	Description
200	JSON-LD	JSON-LD related Error	Error	Generic JSON-LD related error.
201	Syntax - JSON-LD	No @context	Critical	The input has no @context
202	Semantic - JSON-LD	Bad @context	Error	The input has an invalid @context. Must be something in different syntax possibilities, only one @context in whole document expected.
203	Syntax - JSON-LD	No @type	Critical	Object misses a @type property.
204	Semantic - JSON-LD	Bad @type	Error	Object has an invalid @type - must be string or array of strings
205	Sintax - JSON-LD	Double Nested Array	Error	The input contains a double nested array, which is not conform to the JSON-LD Specification.
206	Semantic - JSON-LD	Usage of null	Warning	Usage of null as value - The use of the null value within JSON-LD is used to ignore or reset values. null has the same meaning as if the dictionary member was not defined.
207	Semantic - JSON-LD	Usage of undefined	Error	Usage of undefined as value - Not valid in JSON-LD

300 - Schema.org related errors

The errors in this category are based on the Schema.org vocabulary. These errors can apply on Annotations during the Annotation Validation.

Code	Error field	Name	Severity	Description
300	SDO	Schema.org related Error	Error	Generic Schema.org related error.
301	Semantic - SDO	Nonconform @context	Error	Used @context must be schema.org
302	Semantic - SDO	Nonconform @type	Error	Used @type is nonconform to Schema.org
303	Semantic - SDO	Nonconform property	Error	Used property in nonconform to Schema.org
304	Semantic - SDO	Bad action property	Error	Used action property (input- output-) has a value that is not a string.
305	Semantic - SDO	Nonconform domain	Error	The input has a property that it is not allowed to use for the @type
306	Semantic - SDO	Nonconform range	Error	The input has a property with a value data type that is not conform to Schema.org (also for datatypes)
307	Semantic - SDO	Unexpected string value	Warning	Property uses a string as value, instead of a datatype stated as range.
308	Semantic - SDO	Bad enumeration	Warning	The input has an enumeration value that is not conform to schema.org - must be an url stated as enumeration value

400 - Domain Specification related Errors

The errors in this category are based on the Domain Specification vocabulary/data model. These errors can apply on Domain Specifications during the Meta Validation.

Code	Error field	Name	Severity	Description
400	DomainSpecification	Domain Specification related Error	Error	Generic Domain Specification related error.
401	Syntax - DomainSpecification	No $type	Error	Specification Node has no $type property.
402	Semantic - DomainSpecification	Bad $type	Error	Specification Node has invalid $type value (must be string from allowed types)
403	Syntax - DomainSpecification	Nonconform node range	Error	Specification Node has a $type that is a not conform range according to the DS grammar.
404	Syntax - DomainSpecification	Missing property	Error	Required property not found. Specification Node misses a property that is required.
405	Syntax - DomainSpecification	Unknown property	Warning	Specification Node has an unknown property (not assigned to an extension)
406	Syntax - DomainSpecification	Nonconform range	Error	Property has a value (data type or value) that is not conform to the DS grammar.
407	Semantic - DomainSpecification	Bad $SDOversion	Error	URI of schema.org vocabulary is invalid.
408	Semantic - DomainSpecification	Bad $schema	Error	URI of the DomainSpecification grammar is invalid.
409	Semantic - DomainSpecification	Bad $ref	Error	Reference object has an invalid or undefinied value (JSON pointer must start with "/definitions/" and exist in the DomainSpecification)
410	Semantic - DomainSpecification	Unknown Schema.org class	Error	Invalid Schema.org Class reference
411	Semantic - DomainSpecification	Unknown Schema.org property	Error	Invalid Schema.org Property reference
412	Semantic - DomainSpecification	Unknown Schema.org data type	Error	Invalid Schema.org DataType reference
413	Semantic - DomainSpecification	Unknown Schema.org enumeration	Error	Invalid Schema.org Enumeration reference
414	Semantic - DomainSpecification	Unknown Schema.org enumeration value	Error	Invalid Schema.org EnumerationValue reference
415	Semantic - DomainSpecification	Unknown $rule type	Error	Unknown $rule type - rule name is unknown
416	Semantic - DomainSpecification	Nonconform $rule type	Error	$rule value is not valid for the $type of the rule
417	Semantic - DomainSpecification	Nonconform parameter	Error	The parameter has an invalid data type for the $rule

500 - Compliance related Errors

The errors in this category are based on the Schema.org vocabulary. These errors can apply on Annotations during the Annotation Validation.

Code	Error field	Name	Severity	Description
500	Domain specific	DS Compliance related Error	Error	Generic Compliance related error.
501	Syntax - Domain specific	Nonconform @type	Error	Annotation has a @type not specified by the DS. - Applies to the @type of the root object
502	Syntax - Domain specific	Nonconform property	Warning	Annotation has a property that is not specified by the DS.
503	Syntax - Domain specific	Missing property	Error	Annotation misses a property that is required by the DS.
504	Syntax - Domain specific	Nonconform property cardinality	Error	Annotation has a property with a cardinality (amount of values), that is nonconform to the DS.
505	Syntax - Domain specific	Nonconform range	Error	Property has a value with a @type/DataType that is nonconform to the DS.
506	Syntax - Domain specific	Nonconform property uniqueness	Error	Property has values that are not unique. - ("uniqueValues": true)
507	Syntax - Domain specific	Nonconform enumeration value	Error	Property has an enumeration value that is nonconform to the DS.
550	Semantic - Domain specific	DS Rule Compliance related Error	Error	Generic Compliance of semantic rule related error.
551	Semantic - Domain specific	Nonexistent $path	Informal	A $path object for a rule can not be resolved. Rule can not be checked.
552	Semantic - Domain specific	TextRule violation	Error	A TextRule was violated.
553	Semantic - Domain specific	BooleanRule violation	Error	A BooleanRule was violated.
554	Semantic - Domain specific	DateRule violation	Error	A DateRule was violated.
555	Semantic - Domain specific	TimeRule violation	Error	A TimeRule was violated.
556	Semantic - Domain specific	DateTimeRule violation	Error	A DateTimeRule was violated.
557	Semantic - Domain specific	NumberRule violation	Error	A NumberRule was violated.
558	Semantic - Domain specific	ComplexRule violation	Error	A ComplexRule was violated.