Credit Card Number invalid coming

[manal]

Credit Card Number invalid coming if we try to call  the captureOnly() Api where only we have to pass the last four digits of the creditcard number and also what to enter in the expiration date as we dont have to store the card number and the expiration date .Please how to solve this error .I amd using the sandbox account

[RichardH]

Hello @manal

Are you trying to capture a previously authorized amount done through Authorize.Net?  If so, you should use Capture a Previously Authorized Amount: 

http://developer.authorize.net/api/reference/index.html#payment-transactions-capture-a-previously-au...

Richard