To transmit identifying parties and document types
To transmit identifying equipment mark and type associated with the cycle or transaction
To specify identifying information
To reference a line number in a transaction set
To identify source and type of car hire rate
To identify the car hire beginning and ending cycle location and associated information
To identify an external reference
To communicate basis of pricing, such as contract number, quote number, or tariff number
To specify identifying information
To specify the currency (dollars, pounds, francs, etc.) used in a transaction
To identify the car hire value detail associated with a settlement