AWS Documentation » Amazon Simple Pay » Advanced Guide » Working with Amazon Simple Pay Buttons » Amazon Simple Pay Button Input Reference » Accept Marketplace Fee Button Input Reference	« Previous Next »
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Accept Marketplace Fee Button Input Reference

This button may be use to set terms for either the Marketplace button or the Marketplace-enabled donation button. The input parameters are a mix of required parameters, as listed in the following table.

Parameter	Description	Required
`accessKey`	Your access key from your account security credentials	Yes
`callerReference`	Optionally, a value to uniquely identifies this transaction	No
`collectEmailAddress`	Set to `1` if you want Amazon Payments to return the buyer's email address as part of the transaction information	No
`maxFixedFee`	If you assess a fixed charge per transaction, set `maxFixedFee` to that value. You may have a value in both this parameter and `maxVariableFee`, and you must have a value for at least one of them.	No
`maxVariableFee`	If you assess a percentage charge per transaction, set `maxVariableFee` to that value. You may have a value in both this parameter and `maxFixedFee`, and you must have a value for at least one of them.	No
`pipelineName`	The kind of token you are creating. For Amazon Simple Pay, this value is always `Recipient`.	Yes
`recipientPaysFee`	Set this value to `True` if the recipient agrees to pay the fees, otherwise set this value to `False`.	Yes
`returnURL`	Optionally enter the URL where buyers should be redirected after they complete the transaction	No
`signature`	A value calculated using the form parameters.	Yes
`signatureMethod`	The signing algorithm, either `HmacSHA1` or `HmacSHA256`.	Yes
`signatureVersion`	A value that specifies the signature format. Currently, the only valid value is `2`.	Yes

For information on using the Amazon Simple Pay to create buttons, see Understanding the Amazon Simple Pay Button Samples.

Accept Marketplace Fee Button Well-Formed HTML

Example HTML for a marketplace fee button, signed using the signature version 2 method.

<form 
  action="https://authorize.payments.amazon.com/cobranded-ui/actions/start"
  method="get">
  <input 
    type="hidden" name="signature" 
    value="8UVrm+bK/O8I92e6RKlWKg76els=" >
  <input 
    type="hidden" name="accessKey" 
    value="AKIAIOSFODNN7EXAMPLE" >
  <input 
    type="hidden" name="callerReference" 
    value="983fab72-6695-4b53-a69f-5bf5fb47c25e" >
  <input 
    type="hidden" name="collectEmailAddress" 
    value="true" >
  <input 
    type="hidden" name="maxFixedFee" 
    value="0.2" >
  <input 
    type="hidden" name="maxVariableFee" 
    value="4.00" >
  <input 
    type="hidden" name="pipelineName" 
    value="Recipient" >
  <input 
    type="hidden" name="recipientPaysFee" 
    value="true" >
  <input 
    type="hidden" name="returnURL" 
    value="http://yourwebsite.com/returnurl" >
  <input 
    type="hidden" name="signatureVersion"
    value="2" >
  <input type="hidden" name="signatureMethod"
    value="HmacSHA256" >
  <input type="image" 
    src=
 "http://g-ecx.images-amazon.com/images/G/01/asp/MarketPlaceFeeWithLogo.gif"
    border="0">
</form>

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