Error reporting from PayPalAPI module

[kate25]

hi guys,

 

can someone please explain to me what does it mean:

a customer tried to buy a product but I have received error message to email:

 

 

A client has encountered a problem with the module PayPalAPI, see the report:   PayPal response:
TIMESTAMP -> 2013-09-20T05:34:07Z
L_ERRORCODE0 -> 10401
L_ERRORCODE1 -> 10426
L_ERRORCODE2 -> 10413
L_ERRORCODE3 -> 10431
L_SHORTMESSAGE0 -> Transaction refused because of an invalid argument. See additional error messages for details.
L_SHORTMESSAGE1 -> Transaction refused because of an invalid argument. See additional error messages for details.
L_SHORTMESSAGE2 -> Transaction refused because of an invalid argument. See additional error messages for details.
L_SHORTMESSAGE3 -> Transaction refused because of an invalid argument. See additional error messages for details.
L_LONGMESSAGE0 -> Order total is invalid.
L_LONGMESSAGE1 -> Item total is invalid.
L_LONGMESSAGE2 -> The totals of the cart item amounts do not match order amounts.
L_LONGMESSAGE3 -> Item amount is invalid.
L_SEVERITYCODE0 -> Error
L_SEVERITYCODE1 -> Error
L_SEVERITYCODE2 -> Error
L_SEVERITYCODE3 -> Error
PayPal returned error

 

a days ago everything was fine and worked...

 

I checked API Paypal settings - OK

Paypal account -OK

product in stock - OK

available for order - OK

item Quantity - OK

 

what is wrong?

 

presta version 1.4.7 and paypal version 2.8.6

 

thank you