Wiki source code of Payment Service Provider API ISO 8583:1993 (IFSF) H2H description

Last modified by Bjørnar Ruud on 2021/03/18 10:47

4.1	1	(% class="WordSection1" %)
	2	(((
19.1	3	= Overview =
5.2	4
30.24	5	The H2H PayEx link enables authorization and capture of card transactions. Depending on the card, PayEx is either a PSP or the end host (card issuer). The third party host acts as a gateway between payment terminals and PayEx.
5.2	6
	7
35.1	8	[[image:architecture.png]]
5.2	9
	10
19.1	11	The third party host can be a single or dual host system.
	12	PayEx has a fully redundant system, with an active/active configuration.
30.23	13	The third party host(s) connects to a load balancer at PayEx.
19.1	14
	15
35.5	16	== Test system ==
35.3	17
	18	Our test system is reachable over internet.
	19
	20	Host: pospaydirecttx.externaltest.payex.com
	21
	22	TCP Port: 9046
	23
	24	For production, secure connection are required. Contact PayEx for production setup.
	25
35.2	26	== Supported message types ==
19.1	27
4.1	28
21.1	29	\|=Message Type\|=Reference
38.1	30	\|1100/1110\|[[AUTHORISATION REQUEST>>doc:Main.POS.Payment Service provider API ISO8583_2 ( IFSF) H2H description.AUTHORISATION REQUEST 1100/1110]]
	31	\|1200/1210\|[[FINANCIAL TRANSACTION REQUEST>>doc:Main.POS.Payment Service provider API ISO8583_2 ( IFSF) H2H description.FINANCIAL TRANSACTION REQUEST 1200/1210.WebHome]]
	32	\|1220/1221/1230\|[[FINANCIAL TRANSACTION ADVICE>>doc:Main.POS.Payment Service provider API ISO8583_2 ( IFSF) H2H description.FINANCIAL TRANSACTION ADVICE 1220/1221/1230]]
	33	\|1420/1421/1430\|[[REVERSAL ADVICE>>doc:Main.POS.Payment Service provider API ISO8583_2 ( IFSF) H2H description.REVERSAL ADVICE 1420/1421/1430]]
	34	\|1820/1830\|[[NETWORK MANAGEMENT>>doc:Main.POS.Payment Service provider API ISO8583_2 ( IFSF) H2H description.NETWORK MANAGEMENT 1820/1830.WebHome]]
30.3	35	\|1520/1521/1530\|RECONCILIATION REQUEST (Currently not supported)
4.1	36
30.15	37	* Message types included in the table above are supported unless otherwise specified. E-g reconciliation is not currently supported.
	38	Use links to different message types for details on specific messages.
30.31	39	Only the Financial transaction advice (1220), Reversal Advice (1420) use repeat messages(1221 and 1421). Repeats are to be sent according to rules below.
	40	* Advice can be declined by PayEx for technical reasons. In this case the third party host need to retry the advice until manual intervention or the advice has been accepted. It’s expected that the third party implement a retry delay with exponential wait period between retires. After 6 retry attempts have failed manual intervention by third party and PayEx support must be initiated.
4.1	41
19.1	42	== Message layout ==
	43
16.1	44	This section covers message types and fields supported by PayEx
4.1	45
17.2	46
16.1	47	\|=Presence\|=Title\|=Description
	48	\|C\|Conditional\|The data element’s presence depends on specific circumstances, witch are described either directly or by reference in the message content table.
	49	\|CE\|Conditional echo\|The response message must have the same data element if the data element was present in the original message
	50	\|M\|Mandatory\|Data element must be present in the specified message
	51	\|ME\|Mandatory echo\|The response message must have the same data element and value as sent in the original message request or advice message
	52	\|O\|Optional\|The data element may or may not be present in the message
17.2	53	)))
4.1	54
30.15	55	Optional fields may always be present in requests, even when not needed. In such case, they will be ignored. Requests received missing a mandatory field will get action code 904 - Format Error.
17.2	56
	57	The third party host must ignore unknown fields included in the response messages.
	58
	59	When no usage notes are given in the field description, the field should be used as described in IFSF [1].
	60
	61	The “Format”-column can contain following info:
	62
	63	* LL: Variable length field, max 99 bytes as data. The field contains 2 bytes holding the length of the data. Example: 303101 a one byte field with LL = 3031 and the data is 01.
	64	* LLL: Variable length field, max 999 bytes as data. The field contains 3 bytes holding the length of the data. Example: 30303101 a one byte field with LLL = 303031 and the data is 01.
	65	* Date/time field formats, YYMMDDhhmmss (or variations), where:
	66	** YY : Last 2 digits of the year, 00 through 99
	67	** MM: Month, 01 through 12.
	68	** DD: Day, 01 through 31
	69	** hh: Hour, 00 through 23
	70	** mm: Minutes, 00 through 59
	71	** ss: Seconds, 00 through 59
	72
	73	The “Type”-column can contain:
	74
	75	* a : Alphabetic character [a..z,A..Z]
	76	* n : Numeric BCD-digit. [0..9]
	77	* ans: alphabetic, numeric and special characters
	78	* an : alphabetic and numeric.
	79	* s : Special characters.
	80	* b : Binary
	81	* p: pad character, space
	82	* x: “C” for credit, “D” for debit and shall always be associated with a numerical amount data element.
	83
	84	The “Size”-column can contain:
	85
	86	* Variable length fields have a size that looks like “..nn”, where nn is the maximum number of characters or bytes.
	87	* A fixed length field has “n” as size content, with n the number of characters or bytes.
	88
	89	All fixed length “n” data elements are assumed to be right justified with leading zeroes. All other fixed length data elements are left justified with trailing spaces. In all “b” data elements, blocks of 8 bits are assumed to be left justified with trailing zeroes.
	90
	91
24.2	92	== Message protocol ==
17.2	93
24.2	94	All messages are transferred using TCP/IP sockets.
	95
	96	The message will be encapsulated in a transmission frame as follows:
	97
	98	* The first 4 digits contain the length of the message in ASCII (decimal value, most significant digit first). The length field includes all bytes from the first byte of the message ID up to the last byte of the last field.
	99	* This 4-digit length field is immediately followed by the message ID, also in ASCII (decimal value, most significant digit first).
30.26	100	* An 8 byte message bitmap, which is a binary field (not ASCII encoded).
24.2	101	* Message fields, which could be ASCII or binary encoded. The fields with format ‘n, ns, an, ans, anp or x’ are ASCII encoded, while the fields with format ‘b’ are binary encoded. The following conventions shall be applied to all data elements:
	102	** All fixed length numeric data element values shall be right justified with leading zeroes.
	103	** All fixed length data elements with alphabetic or special characters shall be left justified with trailing blanks.
	104	** All fixed length binary data elements shall be right justified with leading zeroes.
	105	** The position of a character or a bit in a data element shall be counted from the left beginning with one (1).(See also section 5.1 Attribute specification in [01])
	106	** No trailer is included.
	107
	108	Example: An imaginary message which consists only of a message ID “0300” and an empty bitmap (all zeros) will be transmitted as follows:
17.2	109
24.2	110
24.3	111	\|=Length\|=(((
	112	Message ID
	113	)))\|=Bitmap
24.2	114	\|=0x30 0x30 0x31 0x32\|=0x30 0x33 0x30 0x30\|=0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
	115
24.3	116	Example: An 1820 message, without MAC, will be transmitted as follows: Message bytes (hex):
	117	303035303138323002300101000000003039313031353238343133383239313030393039313031353238343138333130353130303331
	118
	119
	120	\|=Field\|=Format\|=Encoding\|=Data\|=Parsed
	121	\|Message Length\|n\|ASCII\|30303530\|0050
30.26	122	\|Message ID\|n\|ASCII\|31383230\|1820
30.9	123	\|Bitmap\|b\|Binary\|0230010100000000\|
24.3	124	\|7 - Date/Time\|n\|ASCII\|30393130313532383431\|0910152841
	125	\|11 - STAN\|n\|ASCII\|333832393130\|382910
	126	\|12 - Date/Time\|n\|ASCII\|303930393130313532383431\|090910152841
	127	\|24 - Function code\|n\|ASCII\|383331\|831
30.9	128	\|33 - Forwarding institution identification code\|n\|ASCII\|(((
	129	30323135
	130	)))\|15
24.3	131
30.19	132	The PayEx response timeout is set to 35 seconds. If after 35+1 seconds, no response has been received, the third party host needs to take the appropriate action based on the message type. (E.g. send a reversal)
24.3	133
30.27	134	The third party host has the possibility to perform offline stand-in, thought this needs to be agreed with the individual card issuers. Otherwise the merchant might not be reimbursed.
24.3	135
38.2	136	== ==
30.13	137
25.1	138	== PIN Validation ==
	139
29.2	140	PayEx perform online PIN validation on payment cards where PayEx is the acquirer, on all other cartds PIN is validated by the third party acuirer. PayEx will not interpret P-22 Point-Of-Service code to determine if it needs to validate PIN or not on PayEx fuel cards, but 3rd patry aquirers might so it's good practice to use P-22 correctly.
25.1	141
	142	Fields required for PIN validation are:
	143
	144	* P-48-14 – PIN encryption Methodology
	145	* P-52 – PIN data
	146	* P-53 – Security related information
	147
32.1	148	(% class="wikigeneratedid" id="H-1" %)
38.1	149	See [[security documentation>>doc:Main.POS.Payment Service provider API ISO8583_2 ( IFSF) H2H description.PayEx IFSF H2H Security specification.WebHome]] for details.
30.13	150
30.7	151	== Security documentation ==
	152
30.22	153	Here you can find details regarding the security elements of this H2H integration.
30.7	154
38.1	155	__[[SECURITY SPECIFICATION>>doc:Main.POS.Payment Service provider API ISO8583_2 ( IFSF) H2H description.PayEx IFSF H2H Security specification.WebHome]]__
30.12	156
30.21	157	== Response codes ==
	158
	159	Here you can find the response codes which may be returned from PayEx.
	160
38.1	161	[[RESPONSE CODES>>doc:Main.POS.Payment Service provider API ISO8583_2 ( IFSF) H2H description.Response codes.WebHome]]
30.21	162
38.2	163	== ==
30.21	164
30.18	165	== Message field overview ==
26.1	166
	167	P-3 PROCESSING CODE
	168
30.28	169	Code used to describe the effect of a transaction on the customer account and the accounts affected. Currently fixed 000000 : Goods and services
26.1	170
30.13	171
26.1	172	P-4 AMOUNT, TRANSACTION
	173
30.29	174	The amount is a numeric value, expressed without a decimal separator. Where a minor unit of currency applies, the relevant minor unit data element indicates the number of decimal places in the relevant amount. Example : NOK 1 = 100
26.1	175
30.13	176
26.1	177	P-7 DATE AND TIME, TRANSMISSION
	178
	179	Date and time of message transmission from the third party host.
	180
30.13	181
26.1	182	P-11 SYSTEM TRACE AUDIT NUMBER
	183
30.28	184	Number assigned by the third party host to assist in identifying a transaction uniquely. Range from 000001 to 999999. Every message must have a new STAN, repeats use the same STAN as the original message.
30.13	185
	186
26.1	187	P-12 DATE AND TIME, LOCAL TRANSACTION
	188
	189	Date and time of the transaction when performed on the POS.
	190
30.13	191
26.1	192	P-22 POINT OF SERVICE DATA CODE
	193
	194	A series of codes intended to identify terminal capability, terminal environment and presentation security data.
	195
	196
	197	P-24 FUNCTION CODE
	198
	199	\|=Function code\|=Description
	200	\|101\|Original authorization, amount estimated used in 1100
	201	\|200\|Original financial request/advice Used in 1200/1220/1221
	202	\|201\|Previously approved authorisation, amount the same Used in 1220/1221
	203	\|202\|Previously approved authorisation, amount differs Used in 1220/1221
	204	\|400\|Full reversal Used in 1420/1421
	205	\|831\|Echo test Used in 1820
	206
	207	P-25 MESSAGE REASON CODE
	208
	209	\|=reason code \|=Description
30.19	210	\|1003\|Card issuer unavailable
26.1	211	\|1004\|Terminal processed
30.20	212	\|1005\|ICC processed
26.1	213	\|1508\|On-line forced by terminal
	214	\|4000\|Customer cancellation
	215	\|4020\|Invalid response, no action taken
	216	\|4021\|Timeout waiting for response
	217	\|4351\|Cancellation - unmatched signature
	218
	219	P-30 ORIGINAL AMOUNT
	220
	221	The original amount data element is a constructed element of two parts with a total of 24 positions:
	222	a) Original amount transaction, n 12;
	223	b) Original amount reconciliation, n 12.
	224	Absence of data shall be indicated by zeroes. These parts shall be used when attempting to perform a partial approval and shall contain the original amounts.
	225
30.13	226
26.1	227	P-33 FORWARDING INSTITUTION IDENTIFICATION CODE
	228
	229	10 digit code identifying the 3rd patry host. Each 3rd party integrated with PayEx will be assigned a unique code that they are to use in all messages where P-33 is specified.
	230
30.13	231
26.1	232	P-38 APPROVAL CODE
	233
	234	Code assigned by the authorising institution indicating approval.
	235
30.13	236
26.1	237	P-39 ACTION CODE
	238
30.30	239	See action code page for codes that can be returned by PayEx.
27.1	240
30.13	241
27.1	242	P-41 Card acceptor terminal identification
30.30	243	Needs to be unique per POS terminal at the merchant site.
27.1	244
30.13	245
27.1	246	P-42 Card acceptor identification code
	247
	248	8 digit unique ID provided by PayEx for each merchant.
	249
30.13	250
27.1	251	P-43 Card acceptor name/location
	252
	253	The name and location of the card acceptor.
	254
30.13	255
27.1	256	P-48 MESSAGE CONTROL DATA ELEMENTS
	257	Used for the control of messages between the POS and the FEP. These are present in field 48 as a variable content data element. It uses a standard bit map to identify the specific data elements present in field 48. The format is LLLVAR with a maximum length of 999. The 8 byte bit map is the first item (element 48-0) in the data element.
	258
	259
30.13	260	P-48-4 BATCH/SEQUENCE NUMBER
	261
27.1	262	This field identifies the transactions associated with a particular settlement period. This number starts at one and increments with each Reconciliation.
	263
	264
30.13	265	P-48-8 CUSTOMER DATA
	266
27.1	267	The customer data is any data entered by the customer or cashier as required by the authorizer to complete the transaction. Transactions requiring customer data may be related to fleet fuelling, cheque authorizations or any other type of retail store management functions. Up to sixteen separate entries are supported. Each entry consists of two elements, the type of customer data entered and the variable length value of the entered data. Successive entries are separated by a back-slash (\). (Note: the LVAR method is not used for these entries.) The entire data element has a maximum length of 250 bytes and is parsed as an LLLVAR field.
	268
	269	\|=Element\|=Name\|=Attribute\|=Description
	270	\|48-8-1\|Number of customer data fields\|n2\|Count of customer data entries to follow.Note: this value must be from 1 to 16.
	271	\|48-8-2\|Type of customer data\|an 1\|Identifies the type of customer data entered. (see P48-8-2)
	272	\|48-8-3\|Value of customer data\|ans...99\|Data entered by customer orcashier.
	273
28.1	274	P-48-8-2 TYPE OF CUSTOMER DATA
27.1	275
30.19	276	1 - Vehicle ID
28.1	277	3 - Driver ID
	278	4 - Mileage
30.19	279
27.1	280
30.19	281	P-48-9 TRACK II OF VEHICLE CARD
27.1	282
30.19	283	Used to specify the second card in a transaction if a special card is needed in addition to the payment card to link a transaction to a loyalty account.
27.1	284
	285
30.13	286	P-48-14 PIN ENCRYPTION METHODOLOGY
30.5	287
38.1	288	See [[security documentation>>doc:Main.POS.Payment Service provider API ISO8583_2 ( IFSF) H2H description.PayEx IFSF H2H Security specification.WebHome]] section for details.
30.5	289
27.1	290
	291	P-48-37 VEHICLE IDENTIFICATION ENTRY MODE
	292	Only present when a vehicle number is available (P48-8). Defines how the vehicle number was entered:
	293
	294	0 - Manual entry
	295	1- On the Card
30.19	296	2 - Automatic License Plate Recognition
27.1	297
30.13	298
27.1	299	P-48-38 PUMP LINKED INDICATOR
	300
28.1	301	Indicating whether the fuel pump reading is is linked to the payment terminal:
27.1	302	0 – Unspecified
	303	1 – Pump-linked
	304	2 – Pump not linked
	305
	306
	307	P-48-39 DELIVERY NOTE NUMBER
	308	Number allocated by the terminal given to the customer as printed on the ticket.
	309
30.13	310
27.1	311	P-49 CURRENCY CODE , TRANSACTION
	312	All transactions are in local currency, as defined during system installation. Actual value is as defined by ISO 4217.
	313
30.13	314
27.1	315	P-52 PIN DATA
28.1	316
38.1	317	See[[ security documentation>>doc:Main.POS.Payment Service provider API ISO8583_2 ( IFSF) H2H description.PayEx IFSF H2H Security specification.WebHome]] section for details.
28.1	318
30.13	319
28.1	320	P-53 SECURITY RELATED CONTROL INFORMATION
	321
38.1	322	See[[ security documentation>>doc:Main.POS.Payment Service provider API ISO8583_2 ( IFSF) H2H description.PayEx IFSF H2H Security specification.WebHome]] section for details.
28.1	323
	324
28.2	325	P-56 ORIGINAL DATA ELEMENTS
	326
	327	Data elements of original transaction which contains the original “message identifier”, original “STAN” and original “date and time – local transaction”. This must be present if the message is preceded by an 1100 Authorisation Request, it can be omitted if the message is as a result of a store and forward transaction.
30.19	328	In Payment advice : Link to previous Authorization dialog
	329	In reversal advice : Link to previous Authorization request or previous Payment request being reversed.
28.1	330
28.2	331
38.2	332	P-61 PIN KSN
	333
40.2	334	This optional field contains a KSN for the PinBlock. To be used instead of the PinKey indicated in P53. See[[ security documentation>>doc:Main.POS.Payment Service provider API ISO8583_2 ( IFSF) H2H description.PayEx IFSF H2H Security specification.WebHome]] section for more details.
38.2	335
	336	\|=Number\|=(% style="width: 229px;" %)Name\|=(% style="width: 216px;" %)Format\|=Attribute\|=Description
	337	\|61\|(% style="width:229px" %) \|(% style="width:216px" %)n\|3\|LLLVAR length field. Sets the length of P-61 data
40.1	338	\|62-1\|(% style="width:229px" %)PIN KSN\|(% style="width:216px" %)ans\|20\|PIN KSN for the PinBlock. Formated as a Hex encoded string
38.2	339
28.2	340	P-62 PRODUCT SETS AND MESSAGE DATA
	341
	342	This field contains allowed product sets and message data.
	343
	344	\|=Number\|=Name\|=Format\|=Attribute\|=Description
	345	\|62\| \|n\|3\|LLLVAR length field. Sets the length of P-62 data
	346	\|62-1\|Allowed products\|ans\|...99\|LLVAR field, contains the products that are allowed
	347	\|62-2\|Device text\|n\|1\|For what device 62-3 is to be sent to
30.29	348	\|62-3\|Message text\|ans\|...999\|LLLVAR field. Display text
28.2	349
	350	All subfields must be present when bit 62 is set. Field 62 shall not be sent if none of the three subfields need to be sent. If one of the subfields needs to be sent, all three subfields shall be sent.
	351
28.3	352
	353	P-63 PRODUCT DATA
	354
	355	This data element provides the detailed information on the products purchased or selected by the customer. The first two fields (63-1, 63-2) appear once per transaction. The next seven fields can be repeated up to 18 times.
	356
30.19	357	Each product is represented by seven fields: Product Code, Unit of Measure, Quantity, Unit Price, Amount, Tax code and Additional product code. The variable length fields and the succeeding entry are separated by a back-slash (\).
28.3	358	Unit price and amount may be negative or positive, but the sum of the amounts in the product data must equal the transaction amount.
	359	The values of Quantity and Unit price may have a value that includes both integer and fractional values. The format of these fields consists of a single digit, which specifies the number of fractional digits following the integer, followed by the numeric value.
	360	The value must be numeric. The number of fractional digits has a maximum of 4. The Amount field may have fractional digits. The number of fractional digits is specified by the currency code.
	361
	362	The list of sales items can contain a mixture of normal sales items and refund items. These are included in the online Host message as follows:
	363
	364
	365	\|=Number\|=Format\|=Field\|=Description
	366	\|63\|n 3\|Product data\|LLLVAR length field. Sets the length of P-63 data
	367	\|63-1\|a 1\|Service level\|(((
	368	S - Self-serve
	369	F - Full serve
	370	Space - Information not available
	371	)))
	372	\|63-2\|n 2\|Number of products\|Count of products (sale item) reported for this transaction.
	373
	374	Each Sales item consists of the following components:
	375
	376
	377	\|=Number\|=Format\|=Field\|=Description
	378	\|63-3\|n 3 \|Product code\|3-digit product code that defines the type of product sold
30.13	379	\|63-4\|a 1 \|Unit of measure\|Indicates the meaning of the Quantity field. ‘U’ Sold per Unit
	380	‘O’ Unit of Measurement undefined ‘L’ Sold per Litre.
28.3	381	\|63-5\|n 9\|Quantity\|Number of product units
	382	\| \| \|Separator\|‘\’ To separate Quantity from Unit-Price
	383	\|63-6\|sn 9\|Unit price\|Starts with a Minus sign when Unit price is negative. First digit is exponent. Typically 3 for fuels, and 2 for shop articles. Remaining digits are actual unit price
	384	\| \| \|Separator\|‘\’ To separate Unit price from Amount
	385	\|63-7\|sn 12\|Amount\|Starts with a minus sign in case Item amount is negative. 2 decimals are always implied.
	386	\| \| \|Separator\|‘\’ To separate the Amount from the Vat Code
	387	\|63-8\|an 1\|Tax code\|1 digit VAT code
	388	\|63-9\|n 14\|Additional Product code\|Up to 14 digits article number as known in the POS
30.13	389	\| \| \|Terminator \|‘\’ To mark the end of this sales item
28.3	390
	391	P-64 MAC
	392
38.1	393	See [[security documentation>>doc:Main.POS.Payment Service provider API ISO8583_2 ( IFSF) H2H description.PayEx IFSF H2H Security specification.WebHome]] for details.
28.3	394
	395
30.11	396	P-127 Encrypted data
	397
38.1	398	This field contains the encrypted track2 data. See [[security documentation>>doc:Main.POS.Payment Service provider API ISO8583_2 ( IFSF) H2H description.PayEx IFSF H2H Security specification.WebHome]] section for details on how to generate this field.
30.14	399
30.17	400
	401	P-128 MAC
	402
38.1	403	This field is used for MAC if P-127 is present. See [[security documentation>>doc:Main.POS.Payment Service provider API ISO8583_2 ( IFSF) H2H description.PayEx IFSF H2H Security specification.WebHome]] for details.