Simple Payment Form

<form action="https://checkout.globalgatewaye4.firstdata.com/payment" method="post"> 

  <input name="x_login" value="WSP­EXA­001­01" type="hidden"> 

  <input name="x_amount" value="1.23" type="hidden"> 

  <input name="x_fp_sequence" value="123456" type="hidden"> 

  <input name="x_fp_timestamp" value="1191600622" type="hidden"> 

  <input name="x_fp_hash" value="4b04d15ccd9007658c2dadc679899ec4" type="hidden"> 

  <input name="x_show_form" value="PAYMENT_FORM" type="hidden"> 

  <input value="Checkout" type="submit"> 

</form>

• Replace the value for x_login with a Payment Page ID of the merchant’s account, and x_amount with the dollar amount payable by the customer.
• The method used to generate the sequence number x_fp_sequence is chosen by the merchant.
• x_fp_timestamp is the timestamp created when the form is generated. It is equal to the number of seconds since January 1, 1970 in UTC (Coordinated Universal Time).
• x_fp_hash is calculated as the HMAC-MD5 from the Transaction Key of the Payeezy Gateway Payment Page with a given x_login and the string"x_login^x_fp_sequence^x_fp_timestamp^x_amount^” with the particular values replaced.
• x_show_form is always equal to “PAYMENT_FORM”.