Adaptive payment paypal credentials - paypal

Question

I am working with Project theme in word Press..I this theme i am using Adaptive payment method for paypal gateway..But i am unable to do..Can any one please help me to complete this task. I got an array see below for array..
I am using Sandbox details
Array
(
[0] => Array
(
[name] => ns3:FaultMessage
[attributes] => Array
(
[xmlns:ns3] => http://svcs.paypal.com/types/common
[xmlns:ns2] => http://svcs.paypal.com/types/ap
)
[0] => Array
(
[name] => responseEnvelope
[0] => Array
(
[name] => timestamp
[value] => 2015-10-12T02:10:03.535-07:00
)
[1] => Array
(
[name] => ack
[value] => Failure
)
[2] => Array
(
[name] => correlationId
[value] => a7b08f9b701fa
)
[3] => Array
(
[name] => build
[value] => 17820627
)
)
[1] => Array
(
[name] => error
[0] => Array
(
[name] => errorId
[value] => 520009
)
[1] => Array
(
[name] => domain
[value] => PLATFORM
)
[2] => Array
(
[name] => subdomain
[value] => Application
)
[3] => Array
(
[name] => severity
[value] => Error
)
[4] => Array
(
[name] => category
[value] => Application
)
[5] => Array
(
[name] => message
[value] => Account Account not found. Unilateral receiver not allowed in chained payment is restricted
)
[6] => Array
(
[name] => parameter
[value] => Account not found. Unilateral receiver not allowed in chained payment
)
)
)
)