To transmit identifying numbers, dates and other basic data relating to the transaction set
Code uniquely identifying a Transaction Set.
Due to the installation of the "ST" segment in all transaction sets, data element 143 in all of the "B" segments is redundant. DE143 will be retained as an optional data element for a period of adjustment. It is suggested that DE143 not be transmitted so it may be dropped from segment definitions in the future.
Code qualifying the Reference Number.
The reference number qualifier code for file identifier is "FI".
Reference number or identification number as defined for a particular Transaction Set, or as specified by the Reference Number Qualifier.
