Magento Configurable Product Tax Sending Paypal Issue

[zoneradx]

I am facing a problem with tax sending to paypal in case of configurable product. Paypal Rejects transaction and throws exception "PayPal gateway has rejected request. The totals of the cart item amounts do not match order amounts (#10413: Transaction refused because of an invalid argument. See additional error messages for details)."

In the request object [AMT] is not going correct, it exempts the tax amount and then go to paypal page.I am unable to debug why just in the case of configurable product tax amount is exempting.

Below is my Paypal request object:

[TOKEN] => EC-54U14942YN9426547
[PAYERID] => EUAUCD394NF5C
[PAYMENTACTION] => Sale
[AMT] => 118.00
[CURRENCYCODE] => USD
[BUTTONSOURCE] => IWD_SI_Other_OnePage
[NOTIFYURL] => http://www.posmogo.com/paypal/ipn/
[RETURNFMFDETAILS] => 1
[ITEMAMT] => 69.00
[TAXAMT] => 17.12
[SHIPPINGAMT] => 49.00
[METHOD] => DoExpressCheckoutPayment