Upload picture to document information extraction via Custom JavaScript in build apps-CORS ERROR

[SushamaS]

I'm tying to build an app in SAP Build apps to capture picture of invoice and upload it to document information extraction.

To upload image to document information extraction I used custom JavaScript and its throwing the following CORS error:

Do we have a fix for this or any other way to upload image to document information extraction?

[zeise]

Hi Sushama,

the error that you observe is a security measure enforced by your browser based on information retrieved from the server that you use to deliver the web page and the script. There are two ways to mitigate this:

• You can configure the server so that the response header of the web page, which runs the script, includes a proper access-control-allow-origin header.
• You can set the request's mode to 'no-cors' to bypass the security restrictions.

You can find more information on CORS here: https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS

You might also consider calling the DOX service from the back-end rather than from the front-end.

Best regards,
Manuel

[Yogananda]

sushamas

you can install cors lib , so you will not have any issues after that in SAP Build APps

npm i cors

[PTLee]

Hi yogananda,
Could you please expand more about how to 'npm i cors' in SAP Build App?
I have the same scenario and same issue as sushamas. Thank you!