Delphi ActiveX Requires Chilkat v11.0.0+

PayPal: Cancel a sent, unpaid invoice

See more PayPal Examples

Cancel an unpaid invoice that has already been sent and notify the customer why. For a draft use delete instead. Cancellation does not return funds.

PayPal documentation

Delphi ActiveX

var
success: Integer;
http: TChilkatHttp;
resp: TChilkatHttpResponse;
body: TChilkatJsonObject;
errorInfo: TChilkatJsonObject;

begin
success := 0;

//  See Unlock Chilkat before making requests.
//  For the merchant's internal backoffice application. Load the sandbox token
//  from the merchant's credential store. Keep it out of publicly distributed apps.
//  See Get a PayPal access token.
http := TChilkatHttp.Create(Self);
http.AuthToken := 'SANDBOX_ACCESS_TOKEN';
resp := TChilkatHttpResponse.Create(Self);

//  This cancels a sent, unpaid invoice. It does not send a refund.

http.SetUrlVar('id','INVOICE_ID');
body := TChilkatJsonObject.Create(Self);
body.UpdateString('subject','Inspection invoice canceled');
body.UpdateString('note','The inspection was canceled before work began.');
body.UpdateBool('send_to_recipient',1);

success := http.HttpJson('POST','https://api-m.sandbox.paypal.com/v2/invoicing/invoices/{$id}/cancel',body.ControlInterface,'application/json',resp.ControlInterface);
if (success <> 1) then
  begin
    Memo1.Lines.Add('No HTTP response: ' + http.LastErrorText);
    Exit;
  end;
if ((resp.StatusCode < 200) or (resp.StatusCode >= 300)) then
  begin
    errorInfo := TChilkatJsonObject.Create(Self);
    errorInfo.Load(resp.BodyStr);
    Memo1.Lines.Add('HTTP ' + IntToStr(resp.StatusCode) + ' ' + errorInfo.StringOf('name') + ' ' + errorInfo.StringOf('details[0].issue'));
    Memo1.Lines.Add('PayPal debug ID: ' + errorInfo.StringOf('debug_id'));
    Exit;
  end;

Memo1.Lines.Add('Cancellation accepted; HTTP ' + IntToStr(resp.StatusCode));