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-Schnittstelle

POS InitiateD

Transaktionstypen (

Aggregierte /

aufgeschobene Autorisierungen)

Below the interfaces description, relevant for submitting Mass Transportation transaction types.

Nachfolgend die Schnittstellenbeschreibung, die zur Übermittlung von Mass Transportation Transaktionstypen relevant ist.

Integrations-Integration System: https://dev.computop.de/Paygate/posPayment.aspx
Production Produktiv-System: …/posPayment.aspx

Aufrufparameter für POS-Zahlungen

Key

Format

CND

Description

RefNr

ans..30

O

Merchant’s unique reference number

For DCC: dccReferenceData (reference of DCC request)

Eindeutige Referenznummer des Händlers

Für DCC: dccReferenceData (Referenz der DCC-Anfrage)

Amount

n..10

M

Amount in the smallest currency unit (e.g. EUR Cent).

For DCC: Amount in foreign currency

Betrag in der kleinsten Währungseinheit (z. B. EUR Cent).

Für DCC: Betrag in Fremdwährung

Currency

a3

M

Currency, three digits DIN / ISO 4217

For DCC: Foreign currency

Währung, drei Zeichen DIN / ISO 4217

Für DCC: Fremdwährung

POSTerminalID

an..20

M

TerminalID of the POS device

Device

an16

M

Serial number of POS device

CCNr

n8..19

C

PAN of the card. For credit cards only the number. For ELV the PAN consisting of country prefix, short sort code, account number and check digit

CCBrand

an..22

M

Brand: VISA, MasterCard, Maestro, AMEX, DINERS, JCB, CUP. Please note spelling!

For ELV always use SEPAELV!

Marke: VISA, MasterCard, Maestro, AMEX, DINERS, JCB, CUP. Bitte beachten Sie die richtige Schreibweise!

Für ELV verwenden Sie immer SEPAELV!

CCCVC

n..4

O

Card validation code: The last 3 digit next to the signature field on the card, 4 digits for AMEX

CCExpiry

n6

M

Mandatory for credit cards. Expiry date of the card (YYYYMM), e.g. 202207

CCSeqNr

n3

O

Card sequence number

Track2

an..224

C

Mandatory for magnet stripe read (MSR). Data of track2 for MSR or Track2Equivalent (Tag 57) (hex representation)

EMVData

an..2048

C

EMV data that is forwarded to the acquirer (BER TLV hex representation). Drop this parameter if there is no EMV data, e.g. MSR

EntryMode

n3

C

Mandatory for credit cards. POS Entry Mode (Tag 9F39)

OrderDesc

ans..200

O

Description of sold goods, unit price, etc.

AccVerify

a..3

O

Allowed value: YES

Used to initiate an account verification (zero value auth). Amount may be zero.

Zulässiger Wert: YES

Wird verwendet, um eine Kontoüberprüfung zu initiieren (Nullwert-Authentifizierung). Der Betrag kann Null sein.

Key

Format

CND

Description

ans..25

O

Text printed on the customer’s credit card bill alongside the payee.

Note: For MasterCard the length is limited to 22 while for VISA 25.

Text, der neben dem Zahlungsempfänger auf der Kreditkartenabrechnung des Kunden gedruckt wird.

Hinweis: Für MasterCard ist die Länge auf 22 Zeichen begrenzt, bei VISA hingegen auf 25.

This field is used to override the default Merchant Name in the Authorization request. (A PTO aggregator ID can be passed through)

DataEncrypted

an. 2048

O

Merchant can submit the Encrypted value of (PAN + Track 2 Equivalent Data in TLV format). If case this field is provided the CCNr is not required.

DataKSN

an. 20

C

KSN value generated from the terminal and required to Decrypt the Data present in 'DataEncrypted' parameter.

Request parameter for POS payments

Key

Format

CND

Description

MessageType

an2

M

Message type for the request

Key

Format

CND

Description

RefNr

ans..30

O

Merchant’s unique reference number

POSTerminalID

an..20

M

TerminalID of the pin entry device

CodeExt

an2

M

Acquirer response code

Approvalcode

n..6

C

Only for credit card, only if configured: Authorization code form the authorization response

EMVData

an..2048

C

For credit card: Acquirer response (hex representation). Consists of ‚Issuer Authorization Response Code‘ (Tag 8A), Issuer Scripts (Tag 71, 72), Issuer Authentication Data (Tag 91) etc.

For ELV: IBAN (Tag 5F53) and Creditor ID (Tag DF65), format see annex EMV Data elements

Bei Kreditkarte: Acquirer-Antwort (Hex-Darstellung). Besteht aus ‚Issuer Authorization Response Code‘ (Tag 8A), Issuer Scripts (Tag 71, 72), Issuer Authentication Data (Tag 91) usw.

Bei ELV: IBAN (Tag 5F53) und Gläubiger-ID (Tag DF65), Format siehe Anhang EMV-Datenelemente

VUNr

ans..20

O

Only for credit card: Contract partner number. Configured in merchant settings.

TerminalID

ans..20

O

AQ

ans..30

O

Only if configured: Acquirer shortcut

TrxTime

ans21

O

Time stamp of transaction in the format dd.MM.yyyy HH:mm:ssff

AdditionalResponseData

ans..99

O

Only for credit card, only if configured: Additional Response Data taken from acquirer response

Key

Format

CND

Description

Last4CardholderPAN

n..4

O

VISA last 4 digits of the embossed PAN when tokenised DPAN was used in the request

PAR

ans…999

O

Payment Account Reference data provided by VISA/MC used mainly by MTT merchants to identify a customer in their back-office system

EmbossedPANPCNr

n..19

O

(MC/Maestro only) Provided only for Mass Transit transaction types and is a second CT PKN that it refers to the Embossed PAN of the physical card. Received in Acquirer response when tokenised PAN was send in request.

EmbossedPANExpiryDate

n..4 (YYMM)

O

(MC/Maestro only) Provided only for Mass Transit transaction types and is the expiration date of the Embossed PAN received from the Acquirer in response.

OriginalCode

ans..3

O

Contains the original response code (BM 60.68 Scheme response code) from payment schemes authorization platforms.

schemeReferenceID

ans..64

O

Card scheme specific transaction ID required for subsequent credential-on-file payments, delayed authorizations and resubmissions.

Antwortparameter für POS-Zahlungen

POS Incremental (Maestro-Szenario)

Integrations-System: https://dev.computop.de/Paygate/posPayment.aspx
Produktiv-System: …/posPayment.aspx

Parameter für Incremental

Antwortparameter für Incremental

Manuelle Stornierung (POS)

Integrations-System: https://dev.computop.de/Paygate/posPayment.aspx
Produktiv-System: …/posPayment.aspx

Parameter für Stornierung

Antwortparameter für Stornierung

Automatisches Inkasso (MIT & VISA Resubmission)

Diagramm des Prozessablaufs über Server-zu-Server

Für die Server-zu-Server-Zahlungsvorgänge beachten Sie bitte das Handbuch Programmiergrundlagen.

Prozessablauf einer Zahlung über Server-zu-Server-Schnittstelle

Aufruf der Schnittstelle: allgemeine Parameter

Um einen TLS-Notify über eine Server-zu-Server-Verbindung durchzuführen, verwenden Sie bitte folgende URL:

ECOM Inkasso (ATB-Webportal) per Formular

Diagramm des Prozessablaufs über die Formularschnittstelle

Prozessablauf der Kreditkartenzahlung über Formula-Schnittstelle

Für ECOM Inkasso sind die Aufruf- und Antwortparameter die gleichen wie bei der Übermittlung einer normalen E-Commerce-Transaktion.

Hinweis: Als Anforderung in MTT von VISA und MasterCard sollte diese Art von Transaktionen immer über den 3DS-Authentifizierungsprozess durchgeführt werden.

Es besteht die Möglichkeit, solche Transaktionen als 3DS 1.0 über unsere Legacy-API: Kreditkarten einzureichen.

Oder über den neuen Authentifizierungsablauf EMV 3DS 2.0 mit der folgenden Online-API: Kreditkartenformular (paySSL).

Integrationshandbuch und Tools

Nachfolgende Dokumente beschreiben ausführlicher, wie Nachrichten richtig programmiert und an die

Um Programmierern die Integration des

• Programmiergrundlagen
• Implementierungsbeispiele

Response parameter for POS payments

POS Incremental (Maestro scenario)

Key

Format

CND

Description

MessageType

an2

M

Key

Format

CND

Description

POSTerminalID

an..20

M

TerminalID of the pin entry device

Device

an16

M

Serial number of pin entry device

EntryMode

n3

M

Mandatory for credit cards. POS Entry Mode.

CCSeqNr

n3

C

Required in all transactions where chip-card is present and the chip card contains a Card Sequence Number, otherwise optional in requests.

Track2

an..224

C

Mandatory for Magnetic Stripe Read (MSR). Data of track 2 with MSR or Track2EquivalentData (tag 57) (in hex formatting).

EMVData

an..2048

C

EMV data as required for passing on to the acquirer (in hex formatting). The exact structure is determined by the protocol used, which is stored in the master data of the terminal. If no EMV data is available, e.g. for MSR, then omit this parameter completely.

DataEncrypted

an..2048

O

Merchant can submit the Encrypted value of (PAN + Track 2 Equivalent Data in TLV format). This only in case the Merchant cannot handle clear text data as a non-PCI DSS.

DataKSN

an. 20

C

KSN value generated from the terminal and required to Decrypt the Data present in 'DataEncrypted' parameter.

Parameter for Incremental

Key

Format

CND

Description

MessageType

an2

M

Message type from request

Key

Format

CND

Description

CodeExt

an2

M

Acquirer response code

POSTerminalID

an..20

M

TerminalID of the pin entry device

VUNr

ans..20

O

Only for credit card: Contract partner number

TerminalID

ans..20

O

AQ

ans..30

O

Only if configured: Acquirer shortcut

TrxTime

ans21

O

Time stamp of transaction in the format dd.MM.yyyy HH:mm:ssff

OriginalCode

ans3

O

Card Scheme original response code

Response parameter for Incremental

Manual Reversal (POS)

Key

Format

CND

Description

MessageType

an2

M

Key

Format

CND

Description

POSTerminalID

an..20

M

TerminalID of the pin entry device

Device

an16

M

Serial number of pin entry device

Parameter for reversal

Key

Format

CND

Description

MessageType

an2

M

Key

Format

CND

Description

CodeExt

an2

M

Acquirer response code

POSTerminalID

an..20

M

TerminalID of the pin entry device

VUNr

ans..20

O

Only for credit card: Contract partner number

TerminalID

ans..20

O

AQ

ans..30

O

Only if configured: Acquirer shortcut

TrxTime

ans21

O

Time stamp of transaction in the format dd.MM.yyyy HH:mm:ssff

OriginalCode

ans3

O

Card Scheme original response code

Response parameter for Reversal

Automatic Debt Recovery (MIT & VISA Resubmission)

Chart of process flow via Server-to-Server

For the server-to-server payment processes please refer to the programming basics manual.

Process flow of a payment via server-to-server interface

Call of interface: general parameters

To carry out a TLS Notify via a Server-to-Server connection, please use the following URL:

Key

Format

CND

Description

Amount3D

n..12

C

Key

Format

CND

Description

CCNr

n..19

M

Credit card number at least 12-digit, numerical without spaces. You can optionally transmit also a pseudo card number (PCN).

CCCVC

n..4

O

Optional, not with ATOS: Card verification number: The last 3 digits on the signature strip of the credit card, 4 numbers in the case of American Express.

Mandatory for Clearhaus

Optional, nicht bei ATOS: Kartenprüfnummer: Die letzten 3 Ziffern auf dem Unterschriftsfeld der Kreditkarte, bei American Express 4 Ziffern.

Pflicht für Clearhaus

CCExpiry

n6

M

Expiry date of the credit card in the format YYYYMM, e.g. 202707

CCBrand

a..22

M

Credit card brand.

Please note the spelling! According to table of credit card brands!

Kreditkartenmarke.

Bitte beachten Sie die richtige Schreibweise gemäß Tabelle der Kreditkartenmarken!

Key

Format

CND

Description

TermURL

ans..256

C

Only for 3DSecure: URL of the shop which has been selected by the Access Control Server (ACS) of the bank to transmit the result of the authentication. The bank transmits the parameters PayID, TransID and MerchantID via GET and the PAResponse parameter via POST to the TermURL.

UserAgent

ans..128

C

Only for 3DSecure: Browser type of the purchaser who requests the page. For example: IE Mozilla/4. 0 (compatible; MSIE 6.0; Windows NT 5.0; NET CLR 1.0.3705)

HTTPAccept

ans..128

C

Only for 3DSecure: MIME types that the customer's client accepts. E.g. image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd. ms-powerpoint, ap-plication/vnd. ms-excel, application/msword, */*

RefNr

ns..15

O

Merchant’s unique reference number

OrderDesc

ans..768

O

Description of purchased goods, unit prices etc.

ChDesc

ans..25

O

Text printed on the customer’s credit card bill alongside the payee

This field is used to override the default Merchant Name in the Authorization request. (A PTO aggregator ID can be passed through)

AccVerify

a3

O

If AccVerify=YES, the card will be checked at the acquirer according to the Acquirer’s interface description. The merchant has to submit only this parameter, the parameter "Amount" is optional. If "Amount" is used, we replace the amount according to acquirer’s interface description. At payment always Amount=0 is stored.

Allowed value: yes

Bei AccVerify=YES wird die Karte beim Acquirer gemäß der Schnittstellenbeschreibung des Acquirers geprüft. Der Händler muss nur diesen Parameter übermitteln, der Parameter „Amount“ ist optional. Wenn „Amount“ verwendet wird, ersetzen wir den Betrag gemäß der Schnittstellenbeschreibung des Acquirers. Bei Zahlung wird immer Amount=0 gespeichert.

Zulässiger Wert: yes

schemeReferenceID

ans..64

C

Card scheme specific transaction ID required for subsequent credential-on-file payments, delayed authorizations and VISA resubmissions.

Key

Format

CND

Description

CCExpiry

n6

OC

Optional in combination with PCNr: Expiry date of the credit card in the format YYYYMM (202706)

CCBrand

a..22

OC

Optional in combination with PCNr: Designation of credit card brand.

Please note the spelling! According to table of credit card brands!

Optional in Kombination mit PCNr: Bezeichnung der Kreditkartenmarke.

Bitte beachten Sie die richtige Schreibweise gemäß Tabelle der Kreditkartenmarken!

MaskedPan

an..19

OC

Masked card number 6X4

AboID

ans..32

O

CAVV

ans..40

O

In the case of authentication hosting: Cardholder Authentication Validation Value: Contains the digital signature for authentication with the ACS of the card issuing bank.

ECI

n2

O

For 3D Secure: ACS E-Commerce indicator: defines the security level of a credit card payment via different communication paths: MOTO, SSL, Verified by Visa etc.

DDD

a1

C

for 3D Secure Authentication Hosting:

Y - fully authenticated (complete authentication done)

N - not enrolled (checked, but Issuer does not participate)

U – un-eligible (technical error)

A – attempt (card does not participate)

B – bypass (bypass, only for Cardinal Commerce)

for 3D Secure Authentication Hosting:

Y - vollständig authentifiziert (vollständige Authentifizierung erfolgt)

N - nicht angemeldet (geprüft, aber Issuer nimmt nicht teil)

U – nicht berechtigt (technischer Fehler)

A – Versuch (Karte nimmt nicht teil)

B – Bypass (Bypass, nur für Cardinal Commerce)

ACSXID

ans..40

O

Only in the case of 2 / 3, with Authentication Hosting: ID for transaction identification. The ACSXID is transferred with the authorization to the Acquiring Bank.

Last4CardholderPAN

N..4

O

VISA last 4 digits of the embossed PAN when tokenized DPAN was used in the request

PAR

ans…999

O

Payment Account Reference data provided by VISA/MC used mainly by MTT merchants to identify a customer in their back-office system

OriginalCode

ans3

O

Card Scheme original response code

ECOM Debt Recovery (ATB web Portal) via Form

Chart of process flow via form interface

Process flow of Credit card payment via form interface

For ECOM Debt Recovery the parameter Request and Response are the same as of submitting a normal Ecommerce transaction.

Note: As a requirement in MTT from VISA and MasterCard this type of transactions should always be carried out through 3DS Authentication process.

There is a possibility to submit such transactions as 3DS 1.0 using our legacy API: Card processing.

Or through the new EMV 3DS 2.0 Authentication flow using the below online API: Credit Card Form (paySSL)

Integration Manual and Tools

Below documents describing in more details how to properly program and send messages towards

To make it easier for programmers who would like to integrate 

• Programming basics
• Implementation Sources