This is root element of this document which contains name space definitions for the document elements. It's a referenced element. For detailed description, please refer referenced element doc. Description is not available. The identifier of the hierarchy value. This value must be unique among other values of the same hierarchy level. Value is restricted by message type. The value will indicate either CH (chain), AR (area), RE (region), or DI (district). It's a referenced element. For detailed description, please refer referenced element doc. This type can hold a string of max length of 2 characters. This type can hold a number of digits count 10.