changeOffer

Request parameters

Parameter	Data type	Description
callback	string	Specifies the action for this request, which in this case is "changeOffer".
subscription_id	numeric	Vendo's subscription identifier. Example: 123456789
offer_id	numeric	Vendo internal offer id for the new offer. Example: 12345
offer_identifier	string	Your offer identifier for the new offer. Example: yearly99
change_type	string	Specifies the change type: upgrade or downgrade
is_test	boolean	Whether or not this request is related to a test transaction or subscription. 0 for no (real transaction) 1 for yes (test transaction)

Your server must reply with one of these response formats:

OK (Response code 1)

Reply with this if the request was received successfully.

Example:

<?xml version="1.0" encoding="UTF-8"?>
<postbackResponse>  
 <changeOffer>       
  <code>1</code> 
 </changeOffer>
</postbackResponse>

ERROR (Response code 2)

Reply with this if you encountered an unexpected problem with the request.

Include a custom error message with your message for tracing and debugging. Make sure this error message is meaningful, as it will be stored in a log file for later debugging.

Vendo will attempt a new changeOffer postback after your error response.

Example:

<?xml version="1.0" encoding="UTF-8"?>
<postbackResponse> 
 <changeOffer>  
  <code>2</code>  
  <errorMessage>Custom error message</errorMessage> 
 </changeOffer>
</postbackResponse>

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Note for NATS users
NATS v3 doesn't support this postback. If you run NATS v3, you have to create a script to handle it. Contact Vendo support for more information.