iso6523Code

An organization identifier as defined in ISO 6523(-1). The identifier should be in the XXXX:YYYYYY:ZZZ or XXXX:YYYYYYformat. Where XXXX is a 4 digit _ICD_ (International Code Designator), YYYYYY is an _OID_ (Organization Identifier) with all formatting characters (dots, dashes, spaces) removed with a maximal length of 35 characters, and ZZZ is an optional OPI (Organization Part Identifier) with a maximum length of 35 characters. The various components (ICD, OID, OPI) are joined with a colon character (ASCII 0x3a). Note that many existing organization identifiers defined as attributes like leiCode (0199), duns (0060) or GLN (0088) can be expressed using ISO-6523. If possible, ISO-6523 codes should be preferred to populating vatID or taxID, as ISO identifiers are less ambiguous.