About Cetelem Presto
General information about Cetelem Presto
Process flow chart
Cetelem Presto process flow
Paygate interface
Format Description a alphabetical as alphabetical with special characters n numeric an alphanumeric ans alphanumeric with special characters ns numeric with special characters bool boolean expression (true or false) 3 fixed length with 3 digits/characters ..3 variable length with maximum 3 digits/characters enum enumeration of allowed values dttm ISODateTime (YYYY-MM-DDThh:mm:ss) Abbreviation Description CND condition M mandatory O optional C conditional Notice: Please note that the names of parameters can be returned in upper or lower case.Definitions
Data formats
Abbreviations
Comment If a parameter is mandatory, then it must be present If a parameter is optional, then it can be present, but it is not required If a parameter is conditional, then there is a conditional rule which specifies whether it is mandatory or optional
Payment with Cetelem Presto via Paygate form interface
To make a payment with Cetelem Presto, please use the following URL:
Notice: For security reasons, Paygate rejects all payment requests with formatting errors. Therefore please use the correct data type for each parameter.
Notice: Please keep in mind that a session expires within 60 minutes. An iFrame integration is not recommended.
The following table describes the encrypted payment request parameters:
Parameter | Format | CND | Description |
---|---|---|---|
MerchantID | ans..30 | M | ID of merchant. Additionally this parameter has to be passed in plain language too. |
TransID | ans..64 | M | Merchant's transaction number, which shall be unique for each payment |
RefNr | an..13 | C | Supplementary transaction identifier. Only the following characters are allowed:
Notice: If RefNr is not present, TransID will be used instead. Therefore in such case TransID should meet format and length of RefNr. |
Amount | n..10 | M | Amount in the smallest currency unit (e.g. EUR Cent) Please contact the helpdesk, if you want to capture amounts <100 (smallest currency unit). |
Currency | a3 | M | Currency, three digits DIN / ISO 4217. Only EUR is permissible. |
MAC | an64 | M | Hash Message Authentication Code (HMAC) with SHA-256 algorithm |
URLSuccess | ans..256 | M | Complete URL which calls up Paygate if payment has been successful. The URL may be called up only via port 443 This URL may not contain parameters: In order to exchange values between Paygate and shop, please use the parameter UserData. |
URLFailure | ans..256 | M | Complete URL which calls up Paygate if payment has been unsuccessful. The URL may be called up only via port 443 This URL may not contain parameters: In order to exchange values between Paygate and shop, please use the parameter UserData. |
Response | a7 | O | Status response sent by Paygate to URLSuccess and URLFailure, should be encrypted. For this purpose, transmit Response=encrypt parameter. |
URLNotify | ans..256 | M | Complete URL which Paygate calls up in order to notify the shop about the payment result. The URL may be called up only via port 443 It may not contain parameters: Use the UserData parameter instead. |
UserData | ans..1024 | O | If specified at request, Paygate forwards the parameter with the payment result to the shop |
ReqID | ans..32 | O | To avoid double payments, enter an alphanumeric value which identifies your transaction and may be assigned only once. If the transaction is submitted again with the same ReqID, Paygate will not carry out the payment, but will just return the status of the original transaction. Please note that the Paygate must have a finalized transaction status for the first initial action. Submissions with identical ReqID for an open status will be processed regularly. |
Plain | ans..50 | O | A value to be set by the merchant to return some information unencrypted, e.g. the MID |
Custom | ans..1024 | O | The merchant can submit several values separated by | which are returned unencrypted and separated by &. Custom=session=123|id=456 will change in the answer to Session=123&id=456 |
Language | a2 | O | Language of Cetelem page. Possible values: FR |
GoodsCategory | n3 | M | Category of the good(s). Possible values are shown in the table below. Note: Paygate does not make any validation and act as a forwarder for this parameter. |
InstallmentAmount | n..10 | O | monthly rate |
InstallmentNumber | n..2 | O | Number of month of the payment by installments (1-48) |
Customer information | |||
Salutation | ans..10 | O | Salutation. Values accepted: Mr/MR, Mrs/MME, Miss/MLE |
FirstName | ans..23 | M | First name of the customer |
LastName | ans..23 | M | Last name of the customer |
MaidenName | ans..30 | O | Maiden name of the customer |
DateOfBirth | ns10 | O | Date of birth within format YYYY-MM-DD |
NatIdentNr | ans..20 | O | National identification |
Phone | a8..15 | O | Phone number (fixed network) |
MobileNr | a8..15 | O | Phone number (mobile) |
ans..49 | M | E-Mail-Address of the customer | |
AddrStreet | ans..32 | M | Street name and street number |
AddrStreet2 | ans..32 | O | Address addition |
AddrZIP | n5 | M | Postal code |
AddrCity | ans..30 | M | Town/city |
WorkPhone | ans..10 | O | Phone number (business) |
Parameters for payments with Celetem Presto
The following table describes the result parameters that the Paygate transmits to your URLSuccess, URLFailure or URLNotify. If you have specified the Response=encrypt parameter, the following parameters are forwarded Blowfish encrypted to your system:
Parameter | Format | CND | Description |
---|---|---|---|
MID | ans..30 | M | ID of merchant, assigned by Computop |
PayID | an32 | M | ID assigned by Paygate for the payment, e.g. for referencing in batch files |
XID | an32 | M | ID for all single transactions for one payment assigned by Paygate |
TransID | ans..64 | M | Merchant’s transaction number |
RefNr | an..13 | C | Supplementary transaction identifier. Only the following characters are allowed:
Notice: If RefNr is not present, TransID will be used instead. Therefore in such case TransID should meet format and length of RefNr. |
Status | a..30 | M | OK or AUTHORIZE_REQUEST in the case of URLSuccess and FAILED in the case of URLFailure |
Description | ans..1024 | M | Further details in the event that payment is rejected. Please do not use the Description but the Code parameter for the status analysis! |
Code | n8 | M | Error code according to Paygate Response Codes (A4 Error codes) |
MAC | an64 | M | Hash Message Authentication Code (HMAC) with SHA-256 algorithm |
UserData | ans..1024 | O | If specified at request, Paygate forwards the parameter with the payment result to the shop |
TransactionID | ans..32 | M | Cetelem contract number |
CodeExt | ans..256 | O | External error code |
ErrorText | ans..256 | O | Description of external error code |
Plain | ans..50 | O | A value to be set by the merchant to return some information unencrypted, e.g. the MID |
Custom | ans..1024 | O | The merchant can submit several values separated by | which are returned unencrypted and separated by &. Custom=session=123|id=456 will change in the answer to Session=123&id=456 |
Return parameters for URLSuccess, URLFailure or URLNotify with Cetelem Presto
Credit with reference
Credits (refunds) are possible via a Server-to-Server connection. For a Credit with reference to a capture the amount of the Credit is limited to the amount of the previous capture.
To carry out a credit with a reference transaction, please use the following URL:
Notice: For security reasons, Paygate rejects all payment requests with formatting errors. Therefore please use the correct data type for each parameter.
The following table describes the encrypted payment request parameters:
Parameter | Format | CND | Description |
---|---|---|---|
MerchantID | ans..30 | M | ID of merchant. Additionally this parameter has to be passed in plain language too. |
PayID | an32 | M | ID assigned by Paygate for the payment to be credited |
TransID | ans..64 | M | ID assigned by Merchant for the payment process to be credited |
Amount | n..10 | M | Amount in the smallest currency unit (e.g. EUR Cent) Please contact the helpdesk, if you want to capture amounts < 100 (smallest currency unit). |
Currency | a..3 | M | Currency code, three digits DIN / ISO 4217 |
MAC | an64 | M | Hash Message Authentication Code (HMAC) with SHA-256 algorithm |
ReqID | ans..32 | O | To avoid double payments, enter an alphanumeric value which identifies your transaction and may be assigned only once. If the transaction is submitted again with the same ReqID, Paygate will not carry out the payment, but will just return the status of the original transaction. Please note that the Paygate must have a finalized transaction status for the first initial action. Submissions with identical ReqID for an open status will be processed regularly. |
Parameters for credit payments with Cetelem Presto via socket connection
The following table describes the Paygate response parameters:
Parameter | Format | CND | Description |
---|---|---|---|
MID | ans..30 | M | ID of merchant, assigned by Computop |
PayID | an32 | M | ID assigned by Paygate for the payment, e.g. for referencing in batch files |
XID | an32 | M | ID for all single transactions (authorisation, capture, credit note) for one payment assigned by Paygate |
TransID | ans..64 | M | Merchant’s transaction number |
Status | a..30 | M | OK or FAILED |
Description | ans..1024 | M | Further details in the event that payment is rejected. Please do not use the Description but the Code parameter for the transaction status analysis! |
Code | n8 | M | Error code according to Paygate Response Codes (A4 Error codes) |
Response parameters for credit payments with Cetelem Presto via socket connection