PayPal Sandbox

Developer Account, Business Account and Rest APP

• Business account is linked to develoer account
• When create a Rest APP, need to choose a business account
• PayPal merchant id is from the business account
• client id and secrete is from Rest App

If PayPal merchant id is not matched to client id/secrete, may get the following error when do refund.

'issue' => 'PERMISSION_DENIED',
      'field' => 'capture_id',
      'value' => '7VJ16605X3012345',
      'description' => 'You do not have permission to access or perform operations on this resource.'