Process flow charts
QR Code
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QR Code
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Process flow WeChat QR Code
W2A
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Process flow WeChat W2A
APP
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Process flow WeChat APP
JSAPI
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Process flow WeChat JSAPI
Barcode
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Process flow WeChat Barcode
QRCode (Server mode)
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Process flow WeChat QR Code (Server mode
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interface
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Call of
Paygate Multiexcerpt include SpaceWithExcerpt EN MultiExcerptName Platform-Kurz PageWithExcerpt Wording
interface for WeChat
SpaceWithExcerpt | EN |
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MultiExcerptName | Platform-Kurz |
PageWithExcerpt | Wording |
Please use the following URL to process a WeChat payment via the Paygate
form: Multiexcerpt include SpaceWithExcerpt EN MultiExcerptName Platform-Kurz PageWithExcerpt Wording
wechat.aspx |
Notice: For security reasons, Paygate rejects all payment requests with formatting errors. Therefore, please use the correct data type for each parameter.Notice: For INAPP requests INAPP requests (Channel=APP) the interface is called via a server-to-server connection.
The following table describes the encrypted payment request parameters:
Parameter
Format
CND
Description
MerchantID
ans..30
M
MerchantID, assigned by Computop. Additionally this parameter has to be passed in plain language too.
TransID
an..32
M
TransactionID which should be unique for each payment
RefNr
an..32
O
Unique reference number
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.
For domestic merchants only CNY is permissible. For cross-border merchants only GBP, HKD, USD, JPY, CAD, AUD, EUR, NZD, KRW, THB, SGD, RUB is permissible.
MAC
an64
M
Hash Message Authentication Code (HMAC) with SHA-256 algorithm
Channel
a..32
M
WeChat payment method:
QRCode: QR code payment. Display to the customer on PC web page.
W2A: Merchant has its own mobile H5 page and supports third-party browsers.
APP: Merchant has its own mobile H5 page
JSAPI:
OrderDesc
an..128
M
Description of purchased goods, unit prices etc. The special characters “#”, “&”, “%” and “+” are not permitted here.
OrderDesc2
an..2048
O
Detailed item list. Each item is separated by a semicolon (;).
Example: BookID:10,BookPrice:120;PenID:10,Material:Steel
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.
IPAddr
ns..16
O
Fraud prevention: IP address
TimeOut
n..14
O
Time limit for a transaction. Unit: minutes. At least 5 minutes.
GoodsCategory
an..32
O
Intended purpose on discount coupon.
ProductNr
an..32
O
Equivalent of Product ID used to identify the product
Limit
bool
O
If true, the payment won't accept credit cards, otherwise accept credit cards
ShopSystem
a..8
C
Mandatory in case of W2A. Applied platform, options values: IOS/Android/WAP.
ShopName
an..120
C
Mandatory in case of W2A. App’s name for IOS/Android; Website’s name for WAP.
ShopURL
an..128
C
Mandatory in case of W2A. Bundle id in case of IOS; package name in case of Android; Wap url for WAP.
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
Parameters for payments with WeChat
The following table describes the result parameters that Paygate transmits to your URLNotify, URLSuccess or URLFailure. If you have specified the Response=encrypt parameter, the following parameters are sent Blowfish encrypted to your system:
Parameter
Format
CND
Description
MID
ans..30
M
MerchantID, 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
an..32
M
Merchant’s transaction number
RefNr
an..32
O
Unique reference number
MAC
an64
M
Hash Message Authentication Code (HMAC) with SHA-256 algorithm
Status
a..50
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)
UserData
ans..1024
C
Not with Channel=INAPP: If specified at request, Paygate forwards the parameter with the payment result to the shop.
PrepayID
ans..64
C
Only with Channel=INAPP: required for calling Paygate Payment SDK
CodeExt
an..32
O
Wechat error code
ErrorText
ans..128
O
Detailed Wechat error message
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
Results parameters for URLNotify, URLSuccess and URLFailure
Barcode payment
Please use the following URL to process a WeChat Barcode payment via server-to-server connection:
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
MerchantID, assigned by Computop. Additionally this parameter has to be passed in plain language too.
TransID
ans..64
M
TransactionID which should be unique for each payment
RefNr
ns..30
O
Unique reference number
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
MAC
an64
M
Hash Message Authentication Code (HMAC) with SHA-256 algorithm
OrderDesc
an..128
M
Description of purchased goods, unit prices etc. The special characters “#”, “&”, “%” and “+” are not permitted here.
OrderDesc2
an..2048
O
Goods details
Response
a7
O
Status response sent by Paygate to URLSuccess and URLFailure, should be encrypted. For this purpose, transmit Response=encrypt parameter.
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.
TimeOut
n..14
O
Time limit for a transaction. Unit: minutes. At least 1 minutes.
GoodsCategory
an..32
O
Intended purpose on discount coupon
Limit
bool
O
If true, the payment won't accept credit cards, otherwise accept credit cards
BuyerIDcode
n128
M
Customer’s payment code with fixed length
Parameters for Barcode payments with WeChat
The following table describes the Paygate response parameters:
Parameter
Format
CND
Description
MID
ans..30
M
MerchantID, 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
RefNr
ns..30
O
Unique reference number
Status
a..50
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)
UserData
ans..1024
C
If specified at request, Paygate forwards the parameter with the payment result to the shop
CodeExt
an..32
O
Wechat error code
ErrorText
ans..128
O
Detailed Wechat error message
Response parameters for Wechat Barcode payment
QRCode (Server mode)
Please use the following URL to process a WeChat payment with QRCode in server mode:
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
MerchantID, assigned by Computop. Additionally this parameter has to be passed in plain language too.
TransID
ans..64
M
TransactionID which should be unique for each payment
RefNr
ns..30
O
Unique reference number
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
MAC
an64
M
Hash Message Authentication Code (HMAC) with SHA-256 algorithm
OrderDesc
an..128
M
Description of purchased goods, unit prices etc. The special characters “#”, “&”, “%” and “+” are not permitted here.
OrderDesc2
an..2048
O
Detailed item list. Each item is separated by a semicolon (;).
Example: BookID:10,BookPrice:120;PenID:10,Material:Steel
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
O
Complete URL which Paygate calls up in order to notify the shop about the payment result. It also could be configured in backend. 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.
IPAddr
ns..16
O
Fraud prevention: IP address of client.
TimeOut
n..14
O
Time limit for a transaction. Unit: minutes. At least 5 minutes.
GoodsCategory
an..32
O
Intended purpose on discount coupon.
ProductNr
an..32
O
Equivalent of Product ID used to identify the product.
Limit
bool
O
If true, the payment won't accept credit cards, otherwise accept credit cards.
Parameters for QRCode payments with WeChat in server mode
The following table gives the parameters with which Paygate responds:
Parameter
Format
CND
Description
MID
ans..30
M
MerchantID, 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
RefNr
ns..30
O
Unique reference number
Channel
a..32
M
QRCode
Status
a..50
M
AUTHORIZE_REQUEST 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)
UserData
ans..1024
C
If specified at request, Paygate forwards the parameter with the payment result to the shop
QRCodeUrl
ans..64
C
QRCode Url. Exists only with no error.
CodeExt
an..32
O
Wechat error code
ErrorText
ans..128
O
Detailed Wechat error message
Response parameters for QRCode payments with WeChat in server mode
Reversal
Reversals are possible via a Server-to-Server connection. In order to cancel a payment via a server-to-server communication, please use to 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 reversal parameters:
Parameter
Format
CND
Description
MerchantID
ans..30
M
MerchantID, assigned by Computop. Additionally this parameter has to be passed in plain language too.
PayID
an32
M
ID assigned by Paygate for the payment to be reverted
TransID
ans..64
M
Merchant ID for the identification of the payment process to be reversed
RefNr
ns..30
O
Unique reference number
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
UserData
ans..256
O
If specified at request, Paygate forwards the parameter with the payment result to the shop
Parameters for reversals of WeChat payments
The following table describes the Paygate response parameters:
Parameter
Format
CND
Description
MID
ans..30
MC
MerchantID, 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 transaction number, which must be unique
Status
a..50
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 reversals
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:
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Parameters for payments with WeChat
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Results parameters for URLNotify, URLSuccess and URLFailure
Barcode payment
Please use the following URL to process a WeChat Barcode payment via server-to-server connection:
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Multiexcerpt include SpaceWithExcerpt EN MultiExcerptName Request_Intro PageWithExcerpt Reuse API
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Parameters for Barcode payments with WeChat
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Response parameters for Wechat Barcode payment
QRCode (Server mode)
Please use the following URL to process a WeChat payment with QRCode in server mode:
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Parameters for QRCode payments with WeChat in server mode
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Response parameters for QRCode payments with WeChat in server mode
Reversal
Reversals are possible via a Server-to-Server connection. In order to cancel a payment via a server-to-server communication, please use to the following URL:
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Parameters for reversals of WeChat payments
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Response parameters for reversals
Credit with reference
Multiexcerpt include SpaceWithExcerpt EN MultiExcerptName Credit_Intro PageWithExcerpt Reuse API
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Multiexcerpt include SpaceWithExcerpt EN MultiExcerptName Request_Intro PageWithExcerpt Reuse API
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Parameters for credits of WeChat payments
Multiexcerpt include SpaceWithExcerpt EN MultiExcerptName Response_Intro PageWithExcerpt Reuse API
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Parameter
Format
CND
Description
MerchantID
ans..30
M
MerchantID, assigned by Computop. 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
an..32
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.
For domestic merchants only CNY is permissible. For cross-border merchants only GBP, HKD, USD, JPY, CAD, AUD, EUR, NZD, KRW, THB, SGD, RUB is permissible.
MAC
an64
M
Hash Message Authentication Code (HMAC) with SHA-256 algorithm
RefNr
an..32
M
Unique reference number
Parameters for credits of WeChat payments
The following table describes the Paygate response parameters:
Parameter
Format
CND
Description
MID
ans..30
M
MerchantID, 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
an..32
M
Merchant’s transaction number
Status
a..50
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)
RefNr
an..32
M
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Result parameters for credits of WeChat payments