External Message Type Layouts

NCS System uses the following codes to denote whether a data element should be present in its external message.

Conditional: The element is mandatory under certain conditions.

Echo: In response messages, this code indicates that the response message sender must include the same value it received in the data element in the associated request message. In other words, the responder must echo back the data element if it is present in the request message.

Mandatory: The element is required in the message.

3.2 Authorization Request/Repeat (0100/0101)

Bit Data	Element Name	Presence Indicator
2	Primary account number	Conditional
3	Processing code	Mandatory
4	Amount, transaction	Mandatory
5	Amount, settlement	Conditional
7	Transmission date and time	Mandatory
9	Conversion rate, settlement	Conditional
11	Systems trace audit number	Mandatory
12	Time, local transaction	Mandatory
13	Date, local transaction	Mandatory
14	Date, expiration	Conditional
15	Date, settlement	Conditional
16	Date, conversion	Conditional
18	Merchant’s type	Conditional
22	POS entry mode	Mandatory
23	Card sequence number	Conditional
25	POS condition code	Mandatory
26	POS PIN capture code	Conditional
27	Authorization id response length	Conditional
28	Amount, transaction fee	Optional
29	Amount, settlement fee	Conditional
30	Amount, transaction processing fee	Optional
31	Amount, settle processing fee	Conditional
32	Acquiring institution id code	Conditional
33	Forwarding institution id code	Optional
35	Track 2 data	Conditional
37	Retrieval reference number	Optional
40	Service restriction code	Optional
41	Card acceptor terminal id	Mandatory
42	Card acceptor id code	Mandatory
43	Card acceptor name/location	Mandatory
45	Track 1 data	Optional
49	Currency code, transaction	Mandatory
50	Currency code, settlement	Conditional
52	PIN data	Conditional
53	Security related control information	Conditional
54	Additional amounts	Conditional
56	Message reason code	Optional
57	Authorization life cycle	Optional
59	Transport (echo) data	Optional
67	Extended payment code	Conditional
90	Original data elements	Conditional
98	Payee	Conditional
100	Receiving institution id code	Conditional
102	Account identification 1	Conditional
103	Account identification 2	Conditional
123	POS data code	Mandatory
124	Near Field Communication Data	Conditional
127.1	Bitmap	Conditional
127.4	POS data	Optional
127.5	Service station data	Optional
127.7	Check data	Conditional
127.10	CVV2	Optional
127.12	Terminal owner	Conditional
127.13	POS geographic data	Conditional
127.14	Sponsor bank	Conditional
127.15	Address verification data	Conditional
127.18	Validation data	Optional
127.19	Bank Details	Conditional
127.20	Originator/Authorizer date settlement	Optional
127.23	Payee name and address	Conditional
127.24	Payer account	Optional
127.25	ICC data	Optional
127.26	Original node	Conditional
127.27	Card verification result	Optional
127.28	American Express Card Identifier (CID)	Optional
127.29	3D Secure Data	Optional
128	MAC Extended	Conditional

3.3 Authorization Request Response (0110)

Bit Data	Element Name	Presence Indicator
2	Primary account number	Mandatory
3	Processing code	Mandatory
4	Amount, transaction	Mandatory
7	Transmission Date and Time	Conditional
11	Systems trace audit number	Conditional
12	Time, local transaction	Mandatory
13	Date, local transaction	Conditional
14	Date, expiration	Conditional
15	Date, Settlement	Conditional
18	Merchant’s type	Mandatory
22	POS entry mode	Mandatory
23	Card sequence number	Conditional
25	POS condition code	Mandatory
28	Amount, transaction fee	Conditional
30	Amount, transaction processing fee	Conditional
32	Acquiring institution id code	Mandatory
33	Forwarding institution id code	Conditional
35	Track 2 data	Conditional
37	Retrieval reference number	Mandatory
38	Authorization id response	Conditional
39	Response code	Mandatory
40	Service restriction code	Conditional
41	Card acceptor terminal id	Optional
42	Card acceptor id code	Conditional
43	Card acceptor name/location	Conditional
49	Currency code, transaction	Mandatory
54	Additional amounts	Conditional
59	Transport (echo) data	Conditional
102	Account identification 1	Optional
103	Account identification 2	Optional
123	POS data code	Mandatory
124	Near Field Communication Data	Conditional
127.1	Fieldmap	Conditional
127.6	Authorization profile	Optional
127.16	Address verification result	Conditional
127.17	Cardholder information	Optional
127.20	Originator/Authorizer date settlement	Optional
127.25	ICC data	Optional
127.27	Card verification result	Optional
127.30	3D Secure Result	Optional
128	MAC Extended	Conditional

3.4 Authorization Advice (0120/0121)

Bit Data	Element Name	Presence Indicator
2	Primary account number	Conditional
3	Processing code	Mandatory
4	Amount, transaction	Mandatory
5	Amount, settlement	Conditional
7	Transmission date and time	Mandatory
9	Conversion rate, settlement	Conditional
11	Systems trace audit number	Mandatory
12	Time, local transaction	Mandatory
13	Date, local transaction	Mandatory
14	Date, expiration	Conditional
15	Date, settlement	Conditional
16	Date, conversion	Conditional
18	Merchant’s type	Conditional
22	POS entry mode	Mandatory
23	Card sequence number	Conditional
25	POS condition code	Mandatory
28	Amount, transaction fee	Optional
29	Amount, settlement fee	Conditional
30	Amount, transaction processing fee	Optional
31	Amount, settle processing fee	Conditional
32	Acquiring institution id code	Conditional
33	Forwarding institution id code	Optional
35	Track 2 data	Conditional
37	Retrieval reference number	Optional
40	Service restriction code	Optional
41	Card acceptor terminal id	Mandatory
42	Card acceptor id code	Mandatory
43	Card acceptor name/location	Mandatory
45	Track 1 data	Optional
49	Currency code, transaction	Mandatory
50	Currency code, settlement	Conditional
54	Additional amounts	Conditional
56	Message reason code	Optional
58	Authorizing agent id cod	Conditional
59	Transport (echo) data	Optional
67	Extended payment code	Conditional
90	Original data elements	Conditional
95	Replacement amounts	Conditional
98	Payee	Conditional
100	Receiving institution id code	Conditional
102	Account identification 1	Conditional
103	Account identification 2	Conditional
123	POS data code	Mandatory
124	Near Field Communication Data	Conditional
127.1	Bitmap	Conditional
127.4	POS data	Optional
127.5	Service station data	Optional
127.7	Check data	Conditional
127.12	Terminal owner	Conditional
127.13	POS geographic data	Conditional
127.14	Sponsor bank	Conditional
127.19	Bank Details	Conditional
127.20	Originator/Authorizer date settlement	Optional
127.23	Payee name and address	Conditional
127.24	Payer account	Optional
127.25	ICC data	Optional
127.26	Original node	Conditional
127.28	American Express Card Identifier (CID)	Optional
128	MAC Extended	Conditional

3.5 Authorization Advice Response (0130)

Bit Data	Element Name	Presence Indicator
2	Primary account number	Conditional
3	Processing code	Optional
4	Amount, transaction	Optional
5	Amount, settlement	Conditional
7	Transmission date and time	Mandatory
9	Conversion rate, settlement	Conditional
11	Systems trace audit number	Mandatory
12	Time, local transaction	Mandatory
13	Date, local transaction	Mandatory
14	Date, expiration	Optional
15	Date, settlement	Conditional
16	Date, conversion	Conditional
18	Merchant’s type	Conditional
22	POS entry mode	Mandatory
23	Card sequence number	Optional
25	POS condition code	Mandatory
28	Amount, transaction fee	Optional
29	Amount, settlement fee	Conditional
30	Amount, transaction processing fee	Optional
31	Amount, settle processing fee	Conditional
32	Acquiring institution id code	Optional
33	Forwarding institution id code	Conditional
35	Track 2 data	Conditional
37	Retrieval reference number	Optional
38	Authorization id response	Conditional
39	Response code	Mandatory
40	Service restriction code	Conditional
41	Card acceptor terminal id	Mandatory
42	Card acceptor id code	Mandatory
43	Card acceptor name/location	Mandatory
44	Additional response data	Optional
48	Additional data	Conditional
49	Currency code, transaction	Mandatory
50	Currency code, settlement	Conditional
54	Additional amounts	Optional
58	Authorizing agent id code	Conditional
59	Transport (echo) data	Conditional
90	Original data elements	Conditional
102	Account identification 1	Optional
103	Account identification 2	Optional
123	POS data code	Mandatory
124	Near Field Communication Data	Conditional
127.1	Bitmap	Conditional
127.2	Switch Key	Optional
127.3	Routing Information	Mandatory
127.6	Authorization profile	Optional
127.12	Terminal Owner	Conditional
127.16	Address verification result	Conditional
127.17	Cardholder information	Optional
127.20	Originator/Authorizer date settlement	Optional
127.22	Structured Data	Conditional
127.25	ICC data	Optional
127.27	Card verification result	Optional
127.30	3D Secure Result	Optional
128	MAC Extended	Conditional

3.6 Financial Request/Repeat (0200/0201)

Bit Data	Element Name	Presence Indicator
2	Primary account number	Conditional
3	Processing code	Mandatory
4	Amount, transaction	Mandatory
5	Amount, settlement	Conditional
7	Transmission date and time	Mandatory
9	Conversion rate, settlement	Conditional
11	Systems trace audit number	Mandatory
12	Time, local transaction	Mandatory
13	Date, local transaction	Mandatory
14	Date, expiration	Conditional
15	Date, settlement	Conditional
16	Date, conversion	Conditional
18	Merchant’s type	Conditional
22	POS entry mode	Mandatory
23	Card sequence number	Conditional
25	POS condition code	Mandatory
26	POS PIN capture code	Conditional
27	Authorization id response length	Conditional
28	Amount, transaction fee	Optional
29	Amount, settlement fee	Conditional
30	Amount, transaction processing fee	Optional
31	Amount, settle processing fee	Conditional
32	Acquiring institution id code	Conditional
33	Forwarding institution id code	Optional
35	Track 2 data	Conditional
37	Retrieval reference number	Mandatory
40	Service restriction code	Conditional
41	Card acceptor terminal id	Mandatory
42	Card acceptor id code	Mandatory
43	Card acceptor name/location	Mandatory
45	Track 1 data	Optional
49	Currency code, transaction	Mandatory
50	Currency code, settlement	Conditional
52	PIN data	Conditional
53	Security related control information	Conditional
54	Additional amounts	Conditional
56	Message reason code	Optional
57	Authorization life cycle	Optional
59	Transport (echo) data	Optional
67	Extended payment code	Conditional
90	Original data elements	Conditional
98	Payee	Conditional
100	Receiving institution id code	Conditional
102	Account identification 1	Conditional
103	Account identification 2	Conditional
123	POS data code	Mandatory
124	Near Field Communication Data	Conditional
127.1	Bitmap	Conditional
127.4	POS data	Optional
127.5	Service station data	Optional
127.7	Check or address verification data	Conditional
127.10	CVV2	Optional
127.12	Terminal owner	Conditional
127.13	POS geographic data	Conditional
127.14	Sponsor bank	Conditional
127.15	Address verification data	Conditional
127.18	Validation data	Optional
127.19	Bank Details	Conditional
127.20	Originator/Authorizer date settlement	Optional
127.22
127.23	Payee name and address	Conditional
127.24	Payer account	Optional
127.25	ICC data	Optional
127.26	Original node	Conditional
127.27	Card verification result	Optional
127.28	American Express Card Identifier (CID)	Optional
127.29	3D Secure Data	Optional
128	MAC Extended	Conditional

3.6 Financial Request Response (0210)

Bit Data	Element Name	Presence Indicator
2	Primary account number	Conditional
3	Processing code	Optional
4	Amount, transaction	Optional
5	Amount, settlement	Conditional
7	Transmission date and time	Mandatory
9	Conversion rate, settlement	Conditional
11	Systems trace audit number	Mandatory
12	Time, local transaction	Mandatory
13	Date, local transaction	Mandatory
14	Date, expiration	Optional
15	Date, settlement	Conditional
16	Date, conversion	Conditional
18	Merchant’s type	Conditional
22	POS entry mode	Mandatory
23	Card sequence number	Optional
25	POS condition code	Mandatory
28	Amount, transaction fee	Optional
29	Amount, settlement fee	Conditional
30	Amount, transaction processing fee	Optional
31	Amount, settle processing fee	Conditional
32	Acquiring institution id code	Optional
33	Forwarding institution id code	Conditional
35	Track 2 data	Conditional
37	Retrieval reference number	Optional
38	Authorization id response	Conditional
39	Response code	Mandatory
40	Service restriction code	Conditional
41	Card acceptor terminal id	Mandatory
42	Card acceptor id code	Mandatory
43	Card acceptor name/location	Mandatory
44	Additional response data	Optional
48	Additional data	Conditional
49	Currency code, transaction	Mandatory
50	Currency code, settlement	Conditional
54	Additional amounts	Optional
58	Authorizing agent id code	Conditional
59	Transport (echo) data	Conditional
102	Account identification 1	Optional
103	Account identification 2	Optional
123	POS data code	Mandatory
124	Near Field Communication Data	Conditional
127.1	Bitmap	Conditional
127.2	Switch Key	Optional
127.3	Routing Information	Mandatory
127.6	Authorization profile	Optional
127.12	Terminal Owner	Conditional
127.16	Address verification result	Conditional
127.17	Cardholder information	Optional
127.20	Originator/Authorizer date settlement	Optional
127.22	Structured Data	Conditional
127.25	ICC data	Optional
127.27	Card verification result	Optional
127.30	3D Secure Result	Optional
128	MAC Extended	Conditional

3.8 Financial Advice/Repeat (Repeat) (0220/0221)

Bit Data	Element Name	Presence Indicator
2	Primary account number	Conditional
3	Processing code	Mandatory
4	Amount, transaction	Mandatory
5	Amount, settlement	Conditional
7	Transmission date and time	Mandatory
9	Conversion rate, settlement	Conditional
11	Systems trace audit number	Mandatory
12	Time, local transaction	Mandatory
13	Date, local transaction	Mandatory
14	Date, expiration	Conditional
15	Date, settlement	Conditional
16	Date, conversion	Conditional
18	Merchant’s type	Conditional
22	POS entry mode	Mandatory
23	Card sequence number	Conditional
25	POS condition code	Mandatory
26	POS PIN capture code	Conditional
28	Amount, transaction fee	Optional
29	Amount, settlement fee	Conditional
30	Amount, transaction processing fee	Optional
31	Amount, settle processing fee	Conditional
32	Acquiring institution id code	Conditional
33	Forwarding institution id code	Optional
35	Track 2 data	Conditional
37	Retrieval reference number	Optional
38	Authorization id response	Conditional
40	Service restriction code	Optional
41	Card acceptor terminal id	Mandatory
42	Card acceptor id code	Mandatory
43	Card acceptor name/location	Mandatory
45	Track 1 data	Optional
49	Currency code, transaction	Mandatory
50	Currency code, settlement	Conditional
54	Additional amounts	Conditional
56	Message reason code	Optional
58	Authorizing agent id code	Conditional
59	Transport (echo) data	Optional
67	Extended payment code	Conditional
90	Original data elements	Conditional
95	Replacement amounts	Conditional
98	Payee	Conditional
100	Receiving Institution ID Code	Optional
102	Account identification 1	Conditional
103	Account identification 2	Conditional
123	POS data code	Mandatory
124	Near Field Communication Data	Conditional
127.1	Bitmap	Conditional
127.4	POS data	Optional
127.5	Service station data	Optional
127.6	Authorization profile	Optional
127.12	Terminal owner	Conditional
127.13	POS geographic data	Conditional
127.14	Sponsor bank	Conditional
127.19	Bank Details	Conditional
127.20	Originator/Authorizer date settlement	Optional
127.23	Payee name and address	Conditional
127.24	Payer account	Optional
127.25	ICC data	Optional
127.26	Original node	Conditional
127.27	Card verification result	Optional
128	MAC Extended	Conditional

3.9 Financial Advice Response (0230)

Bit Data	Element Name	Presence Indicator
2	Primary account number	Conditional
3	Processing code	Optional
4	Amount, transaction	Optional
5	Amount, settlement	Conditional
7	Transmission date and time	Mandatory
9	Conversion rate, settlement	Conditional
11	Systems trace audit number	Mandatory
12	Time, local transaction	Mandatory
13	Date, local transaction	Mandatory
14	Date, expiration	Optional
15	Date, settlement	Conditional
16	Date, conversion	Conditional
18	Merchant’s type	Conditional
22	POS entry mode	Mandatory
23	Card sequence number	Optional
25	POS condition code	Mandatory
28	Amount, transaction fee	Optional
29	Amount, settlement fee	Conditional
30	Amount, transaction processing fee	Optional
31	Amount, settle processing fee	Conditional
32	Acquiring institution id code	Optional
33	Forwarding institution id code	Conditional
35	Track 2 data	Conditional
37	Retrieval reference number	Optional
38	Authorization id response	Conditional
39	Response code	Mandatory
40	Service restriction code	Conditional
41	Card acceptor terminal id	Mandatory
42	Card acceptor id code	Mandatory
43	Card acceptor name/location	Mandatory
44	Additional response data	Optional
48	Additional data	Conditional
49	Currency code, transaction	Mandatory
50	Currency code, settlement	Conditional
54	Additional amounts	Optional
58	Authorizing agent id code	Conditional
59	Transport (echo) data	Conditional
90	Original data elements	Conditional
102	Account identification 1	Optional
103	Account identification 2	Optional
123	POS data code	Mandatory
124	Near Field Communication Data	Conditional
127.1	Bitmap	Conditional
127.2	Switch Key	Optional
127.3	Routing Information	Mandatory
127.6	Authorization profile	Optional
127.12	Terminal Owner	Conditional
127.16	Address verification result	Conditional
127.17	Cardholder information	Optional
127.20	Originator/Authorizer date settlement	Optional
127.22	Structured Data	Conditional
127.25	ICC data	Optional
127.27	Card verification result	Optional
127.30	3D Secure Result	Optional
128	MAC Extended	Conditional

3.10 Reversal Advice (Repeat) (0420/0421)

Bit Data	Element Name	Presence Indicator
2	Primary account number	Conditional
3	Processing code	Mandatory
4	Amount, transaction	Mandatory
5	Amount, settlement	Conditional
7	Transmission date and time	Mandatory
9	Conversion rate, settlement	Conditional
11	Systems trace audit number	Mandatory
12	Time, local transaction	Mandatory
13	Date, local transaction	Mandatory
14	Date, expiration	Conditional
15	Date, settlement	Conditional
16	Date, conversion	Conditional
18	Merchant’s type	Conditional
22	POS entry mode	Mandatory
23	Card sequence number	Conditional
25	POS condition code	Mandatory
28	Amount, transaction fee	Optional
29	Amount, settlement fee	Conditional
30	Amount, transaction processing fee	Optional
31	Amount, settle processing fee	Conditional
32	Acquiring institution id code	Conditional
33	Forwarding institution id code	Optional
35	Track 2 data	Conditional
37	Retrieval reference number	Optional
38	Authorization id response	Conditional
39	Response Code	Optional
40	Service restriction code	Optional
41	Card acceptor terminal id	Mandatory
42	Card acceptor id code	Mandatory
43	Card acceptor name/location	Mandatory
45	Track 1 data	Optional
49	Currency code, transaction	Mandatory
50	Currency code, settlement	Conditional
56	Message reason code	Optional
59	Transport (echo) data	Optional
67	Extended payment code	Conditional
90	Original data elements	Mandatory
95	Replacement amounts	Conditional
98	Payee	Conditional
100	Receiving Institution ID Code	Optional
123	POS data code	Mandatory
124	Near Field Communication Data	Conditional
127.1	Bitmap	Conditional
127.4	POS data	Optional
127.5	Service station data	Optional
127.12	Terminal owner	Conditional
127.13	POS geographic data	Conditional
127.14	Sponsor bank	Conditional
127.19	Bank Details	Conditional
127.20	Originator/Authorizer date settlement	Optional
127.23	Payee name and address	Conditional
127.24	Payer account	Optional
127.25	ICC data	Optional
127.26	Original node	Conditional
127.27	Card verification result	Optional
128	MAC Extended	Conditional

3.11Reversal Advice Response (0430)

Bit Data	Element Name	Presence Indicator
2	Primary account number	Conditional
3	Processing code	Mandatory
4	Amount, transaction	Mandatory
5	Amount, settlement	Conditional
7	Transmission date and time	Mandatory
9	Conversion rate, settlement	Conditional
11	Systems trace audit number	Mandatory
12	Time, local transaction	Mandatory
13	Date, local transaction	Mandatory
14	Date, expiration	Conditional
15	Date, settlement	Conditional
16	Date, conversion	Conditional
18	Merchant’s type	Conditional
22	POS entry mode	Mandatory
23	Card sequence number	Conditional
25	POS condition code	Mandatory
29	Amount, settlement fee	Optional
31	Amount, settle processing fee	Optional
32	Acquiring institution id code	Conditional
33	Forwarding institution id code	Optional
35	Track 2 data	Conditional
37	Retrieval reference number	Optional
38	Authorization id response	Conditional
39	Response code	Mandatory
40	Service restriction code	Optional
41	Card acceptor terminal id	Mandatory
42	Card acceptor id code	Mandatory
49	Currency code, transaction	Mandatory
50	Currency code, settlement	Conditional
54	Additional amounts	Conditional
59	Transport (echo) data	Conditional
90	Original data elements	Mandatory
95	Replacement amounts	Conditional
124	Near Field Communication Data	Conditional
127.1	Bitmap	Conditional
127.3	Routing Information	Mandatory
128	MAC Extended	Conditional

3.12 Network Management (Repeat) (0800/0801)

Bit Data	Element Name	Presence Indicator
7	Transmission date and time	Mandatory
11	Systems trace audit number	Mandatory
12	Time, local transaction	Mandatory
13	Date, local transaction	Mandatory
70	Network management info code	Mandatory
128	MAC Extended	Conditional

3.13 Network Management (0810)

Bit Data	Element Name	Presence Indicator
7	Transmission date and time	Mandatory
11	Systems trace audit number	Mandatory
12	Time, local transaction	Mandatory
13	Date, local transaction	Mandatory
39	Response code	Mandatory
53	Security related control information	Conditional
70	Network management info code	Always sent
125	Network management information	Conditional
128	MAC Extended	Conditional