This International Standard specifies the requirements for defining encodin rules for use for the interchange of data that conform to the geographic information in the set of International Standards known as the "ISO 19100 series". This International Standard specifies - requirements for creating encoding rules based on UML schemas, - requirements for creating encoding services, and - requirements for XML-based encoding rules for neutral interchange of data. This Internations Standard does not specify any digital media, does not define any transfer services or transfer protocols, nor does it specify how to encode inline large images. Replacement of ISO 19118:2005 Encoding Annex A XML based encoding rule, taking into consideration the incorporation of encoding rules from 19136 and ISO 19139 and OMG's XMI 2.0, and add necessary explanation that clarify when and to what extent these rules might be changed. Update of ISO 19118 Encoding according to document 211n1833 ""Requirements for revision of ISO/TC 211 Standards, clause 10 Encoding"", with specific focus on the generic instance model, XML instance model and the object-property model.