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Title

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	1	+Callbacks

Parent

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	1	+eCommerce Documentation.PayEx Checkout.Transaction.WebHome

Author

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1		-XWiki.XWikiGuest
	1	+xwiki:XWiki.hde

Default language

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	1	+en

Content

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	1	+PayEx emits callbacks on all events happening to a payment asynchronously. These callbacks can be used to update the implementers backend systems, send receipts, or any other task related to a change in a payment's status.
	2	+
	3	+Events like
	4	+
	5	+* Cancel
	6	+* Capture
	7	+* Reversal
	8	+* Authorize
	9	+
	10	+= Implementation details =
	11	+
	12	+The implementer registers the callback-url when posting the payment session. The URL should be unique per payment. The resource contains 4 properties:
	13	+
	14	+|(% style="text-align:right" %)**Property** |= Description
	15	+|(% style="text-align:right" %){{code}}payment{{/code}}|The URL of the affected Payment. Perform a GET request on it to retrieve the Payment status.
	16	+|(% style="text-align:right" %){{code}}paymentNumber{{/code}}|The human identifiable number of the Payment, used when talking or writing about the Payment. Only the URL should be used to programmatically identify the Payment.
	17	+|(% style="text-align:right" %){{code}}transactiond{{/code}}|The URL of the affected transaction. Perform a GET request on it to retrieve information about the Transaction.
	18	+|(% style="text-align:right" %){{code}}transactionNumber{{/code}}|The human identifiable number of the Transaction, used when talking or writing about the Transaction. Only the URL should be used to programmatically identify the Transaction.
	19	+
	20	+A Credit Card Callback looks like this:
	21	+
	22	+{{code language="JavaScript"}}
	23	+POST scheme://your.defined.host/and-path/for-recieving HTTP/1.1
	24	+Content-Type: application/json
	25	+
	26	+{
	27	+ "payment": "/psp/creditcard/payments/<paymentId>",
	28	+ "paymentNumber": 123456,
	29	+ "transaction": "/psp/creditcard/payments/<paymentId>/transactions/<transactionId>",
	30	+ "transactionNumber": 12345678
	31	+}
	32	+
	33	+{{/code}}
	34	+
	35	+>**Note!** It is highly probable that this part of the documentation will get changes in the near future.