PayPal Community

Hi,   I need to dynamically generate buttons to upload the whole cart at once and then proceed to the payment. For that purpose, there is a CART button with upload=1.   When I do this in HTML without any security, it works as expected.   <form action="https://www.sandbox.paypal.com/cgi-bin/webscr" method="post"> <input type="hidden" name="cmd" value="_cart"> <input type="hidden" name="upload" value="1"> <input type="hidden" name="business" value="my-business-account"> <input type="hidden" name="item_name_1" value="Item name 1"> <input type="hidden" name="amount_1" value="1.00"> <input type="hidden" name="item_name_2" value="Item name 2"> <input type="hidden" name="amount_2" value="2.00"> <input type="submit" value="PayPal"> </form> However, when I try to create exactly the same button but encrypted through NVP Button Manager API, it fails.   curl https://api-3t.sandbox.paypal.com/nvp \ --data-urlencode USER=<user> \ --data-urlencode PWD=<pass> \ --data-urlencode SIGNATURE=<signature> \ --data-urlencode METHOD=BMCreateButton \ --data-urlencode VERSION=204.0 \ --data-urlencode BUTTONCODE=ENCRYPTED \ --data-urlencode BUTTONTYPE=CART \ --data-urlencode L_BUTTONVAR0=business=<account> \ --data-urlencode L_BUTTONVAR1=upload=1 \ --data-urlencode L_BUTTONVAR2=item_name_1=ABC \ --data-urlencode L_BUTTONVAR3=amount_1=1 \ --data-urlencode L_BUTTONVAR4=item_name_2=DEF \ --data-urlencode L_BUTTONVAR5=amount_2=1 Invocation of this command returns this error in both the sandbox and the production environments.   TIMESTAMP=2017-07-20T20:18:06Z CORRELATIONID=a1ccba5db437c ACK=Failure VERSION=204.0 BUILD=33063964 L_ERRORCODE0=11929 L_SHORTMESSAGE0=Invalid Data L_LONGMESSAGE0=A cart button must have an item name and amount specified. L_SEVERITYCODE0=Error Do you have any clue what could be wrong and why unencrypted version works and encrypted does not? Thanks in advance ... View more