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Autoexport from the XML-Schema for element TT:identifier of railML® version 3.2
Documentation Provides information about the identity of the enclosing train.
Subschema timetable
Parents* identifiers
Children range (0..1)
  • type: Allows to specify the kind of train number described by the enclosing element. (obligatory; xs:string; patterns: other:\w{2,})
Possible values:
  • CommercialTrainNumber
  • OperationalTrainNumber
  • TafTapTsiCaseReferenceId
  • TafTapTsiPathId
  • TafTapTsiPathRequestId
  • TafTapTsiRouteId
  • TafTapTsiTrainId,

  • issuerRef: Reference to organizational unit that represents the issuer of the train number. (optional; xs:string; patterns: (urn:uuid:)?[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}|\{[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}\}),

  • number: Used to specify the train number itself. (obligatory; xs:string),

  • variant: Specifies the variant of the train with the trainnumber encoded by the enclosing element. Inspired by the variant element of the TAF TAP TSI Object Identifier. (optional; xs:string)
Elements may have different parent elements. As a consequence they may be used in different contexts.
Please, consider this as well as a user of this wiki as when developing this documentation further.
Aspects that are only relevant with respect to one of several parents should be explained exclusively in the documentation of the respective parent element.

This element does not appear in railML® 3.1. It is available only in railML® 3.2. Do not hesitate to contact for further questions.

Changes 3.1→3.2

Introduced with version 3.2


Best Practice / Examples

Additional Information


Open Issues