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. Not Yet Available Description is not available. Not Yet Available Provide an extension hook to customize PODtlRef. Description is not available. Indicates the type of document this message is for. This field will always have a value of 'P'. Description is not available. Not Yet Available Provide an extension hook to customize PORef. This type can hold a string of max length of 25 characters. This type can hold a string of max length of 10 characters. This type can hold a number of digits count 10. This type can hold a string of max length of 1 characters.