The /Organization type has several identification properties, for example, /duns, /leiCode, /globalLocationNumber, /vatID and /taxID.

Many of these existing identifiers can be expressed using the ISO/IEC 6523 standard. ISO 6523 codes are composed from an International Code Designator (ICD) value, which identifies the type of the code (e.g., 0060 for DUNS, 0199 for leiCode, or 9910+9920-9957 for European /vatID), and an Organization Identifier (OI) which identifies the organization within that frame of reference.

We therefore propose to add a new property /iso6523 with values of type /Text for use on type /Organization. Alternatively we could introduce a structured type with the 2 fields ICD and OI for values of /iso6523, but since /leiCode allows values of type /Text we propose to do the same for /iso6523 for consistency.