Array ( [USER] => admin_api1.taskvirtual.com [PWD] => VMUAAH2MSPULE88Z [SIGNATURE] => Ate.4JfIqmWSyJlqZy55jqdz5TgTAvonKSf7ToFngK9JdDGt8VflwgZe [METHOD] => SetExpressCheckout [VERSION] => 108 [LOCALECODE] => pt_EN [PAYMENTREQUEST_0_AMT] => [PAYMENTREQUEST_0_CURRENCYCODE] => USD [PAYMENTREQUEST_0_PAYMENTACTION] => Sale [PAYMENTREQUEST_0_ITEMAMT] => [L_PAYMENTREQUEST_0_NAME0] => [L_PAYMENTREQUEST_0_DESC0] => [L_PAYMENTREQUEST_0_QTY0] => 1 [L_PAYMENTREQUEST_0_AMT0] => [L_PAYMENTREQUEST_0_ITEMCATEGORY0] => Digital [L_BILLINGTYPE0] => RecurringPayments [L_BILLINGAGREEMENTDESCRIPTION0] => Your Trial Period will be over after 2 days. [CANCELURL] => https://www.taskvirtual.com/paymentcancel.php [RETURNURL] => https://www.taskvirtual.com/paypal_recurring/createRecurringPaymentsProfile.php?old_cpi=&cpi=&tran_id= ) Array ( [url] => https://api-3t.paypal.com/nvp [content_type] => [http_code] => 0 [header_size] => 0 [request_size] => 0 [filetime] => -1 [ssl_verify_result] => 0 [redirect_count] => 0 [total_time] => 0 [namelookup_time] => 0 [connect_time] => 0 [pretransfer_time] => 0 [size_upload] => 0 [size_download] => 0 [speed_download] => 0 [speed_upload] => 0 [download_content_length] => -1 [upload_content_length] => -1 [starttransfer_time] => 0 [redirect_time] => 0 [redirect_url] => [primary_ip] => [certinfo] => Array ( ) [primary_port] => 0 [local_ip] => [local_port] => 0 )

Response

Array ( [TIMESTAMP] => 2021-12-02T19:43:24Z [CORRELATIONID] => bbc388391da89 [ACK] => Failure [VERSION] => 108 [BUILD] => 56159907 [L_ERRORCODE0] => 10003 [L_SHORTMESSAGE0] => Missing argument [L_LONGMESSAGE0] => Item name, amount and quantity are required if item category is provided. [L_SEVERITYCODE0] => Error )