001		ISA_LOOP - Interchange Control Header
010	ISA	Interchange Control Header	R	1
020 GS_LOOP - Functional Group Header 010 GS Functional Group Header R 1 020 ST_LOOP - Transaction Set Header 005 ST Transaction Set Header R 1 010 HEADER - Table 1 - Header 020 AK1 Functional Group Response Header R 1 030 AK2 - Transaction Set Response Header 030 AK2 Transaction Set Response Header R 1 040 AK3 - Data Segment Note 040 AK3 Data Segment Note R 1 050 AK4 Data Element Note S 99 060 AK5 Transaction Set Response Trailer R 1 070 AK9 Functional Group Response Trailer R 1 020 DETAIL - Table 2 - Detail 030 FOOTER - Table 3 - Footer 080 SE Transaction Set Trailer R 1 030 GE Functional Group Trailer R 1
020	TA1	Interchange Acknowledgement	S	1
030	IEA	Interchange Control Trailer	R	1