Message
Error 10426: Item total is invalid.

Array ( 
[USER] => tickets_api1.southernempress.com 
[PWD] => removed 
[SIGNATURE] => removed 
[VERSION] => 51.0 
[METHOD] => DoDirectPayment 
[PAYMENTACTION] => Sale 
[AMT] => 27.87 
[ACCT] => removed 
[EXPDATE] => 032017 
[FIRSTNAME] => Everett 
[LASTNAME] => Buel 
[CURRENCYCODE] => USD 
[EMAIL] => webmaster@southernempress.com 
[STREET] => 5218 Green Meadow 
[STREET2] => 
[CITY] => Kalamazoo 
[STATE] => Michigan 
[COUNTRYCODE] => US 
[ZIP] => 49009 
[BN] => HikariSoftware_Cart_DP 
[SHIPTONAME] => Everett Buel 
[SHIPTOSTREET] => 5218 Green Meadow 
[SHIPTOSTREET2] => 
[SHIPTOCITY] => Kalamazoo 
[SHIPTOSTATE] => Michigan 
[SHIPTOCOUNTRY] => US 
[SHIPTOZIP] => 49009 
[SHIPTOPHONENUM] => 
[L_NAME1] => June 7 Dinner Cruise 
[L_NUMBER1] => 6-7-dinner-cruise 
[L_AMT1] => 69.95 
[L_QTY1] => 2 
[L_TAXAMT1] => 16.26 
[TAXAMT] => 32.52 
[L_NAME2] => Coupon 
[L_NUMBER2] => coupon 
[L_AMT2] => -144.55 
[L_QTY2] => 1 
[L_TAXAMT2] => 0 
[ITEMAMT] => -4.65 <--------  Here is the problem
[CVV2] => 711 
) 

api-3t.paypal.com/nvp Array ( 

[TIMESTAMP] => 2014%2d05%2d25T11%3a46%3a10Z 
[CORRELATIONID] => 55e2eadd94fc5 
[ACK] => Failure 
[VERSION] => 51%2e0 
[BUILD] => 11165465 
[L_ERRORCODE0] => 10426 
[L_SHORTMESSAGE0] => Invalid%20Data 
[L_LONGMESSAGE0] => Item%20total%20is%20invalid%2e 
[L_SEVERITYCODE0] => Error 
[AMT] => 27%2e87 
[CURRENCYCODE] => USD 

)