Version 23.1 by Kristian Lingsom on 2017/10/16 13:36
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3 = Overview =
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5 The purpose of the H2H PayEx link is to enable authorization and settlement of card transactions, where PayEx is end host for that card, or just an PSP. The third party host acts as a gateway in between payment terminals and PayEx.
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8 [[image:pos server.png]]
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13 The third party host can be a single or dual host system.
14 PayEx has a fully redundant system, with an active/active configuration.
15 The third party host(s) connect to PayEx loadbalanser
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18 == Supported massage types ==
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21 |=Message Type|=Reference
22 |1100/1110|[[AUTHORISATION REQUEST>>doc:AUTHORISATION REQUEST 1100/1110]]
23 |1200/1210|FINANCIAL TRANSACTION REQUEST
24 |1220/1221/1230|FINANCIAL TRANSACTION ADVICE
25 |1420/1421/1430|REVERSAL ADVICE
26 |1820/1830|NETWORK MANAGEMENT
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28 * (% style="tab-stops:21.15pt" %)Message types not included in the table above are not supported. E-g reconciliation is not supported
29 Only the Financial transaction advice (1220), Reversal Advice (1420) use repeat messages. Repeats are to be sendt according to xxxxxxx rules
30 * (% style="tab-stops:21.15pt" %)Advices won’t be declined by PayEx unless for a technical reason.(%%)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 (to-be-defined). After 6 retry attemps have failed manual intervention by thirsd party and PayEx support must be initiated.
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32 == Message layout ==
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34 This section covers message types and fields supported by PayEx
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37 |=Presence|=Title|=Description
38 |C|Conditional|The data element’s presence depends on specific circumstances, witch are described either directly or by reference in the message content table.
39 |CE|Conditional echo|The response message must have the same data element if the data element was present in the original message
40 |M|Mandatory|Data element must be present in the specified message
41 |ME|Mandatory echo|The response message must have the same data element and value as sent in the original message request or advice message
42 |O|Optional|The data element may or may not be present in the message
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45 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 be 904 - Format Error.
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47 The third party host must ignore unknown fields included in the response messages.
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49 When no usage notes are given in the field description, the field should be used as described in IFSF [1].
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51 The “Format”-column can contain following info:
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53 * 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.
54 * 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.
55 * Date/time field formats, YYMMDDhhmmss (or variations), where:
56 ** YY : Last 2 digits of the year, 00 through 99
57 ** MM: Month, 01 through 12.
58 ** DD: Day, 01 through 31
59 ** hh: Hour, 00 through 23
60 ** mm: Minutes, 00 through 59
61 ** ss: Seconds, 00 through 59
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63 The “Type”-column can contain:
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65 * a : Alphabetic character [a..z,A..Z]
66 * n : Numeric BCD-digit. [0..9]
67 * ans: alphabetic, numeric and special characters
68 * an : alphabetic and numeric.
69 * s : Special characters.
70 * b : Binary
71 * p: pad character, space
72 * x: “C” for credit, “D” for debit and shall always be associated with a numerical amount data element.
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74 The “Size”-column can contain:
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76 * Variable length fields have a size that looks like “..nn”, where nn is the maximum number of characters or bytes.
77 * A fixed length field has “n” as size content, with n the number of characters or bytes.
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79 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.
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