I added upload attributes in form from UI designer. And then I deployed and attached file but I can't find my attached file after saving.
Hi,
Documents are stored in your database.
When you use the "upload file" widget, in the field "URL" you will have to fill in the endpoint where the file will be uploaded. Data returned by the server is stored in the value property
The documentation explains the documents behaviour and storage. Therefore, you can find them by using the API (Engine or REST API) to find the document.
If you want to visualise the file, you can use the file viewer widget, and retrieve the file from the URL you have specified in your upload file widget (External API)