Attachments won't be uploaded from third party apps

Ezriel Tauber
edited 02/05/24 in Smartsheet Basics

I'm using Zapier to upload my filled out Docusign form data into Smartsheet rows now everything seems to work fine except that when it comes to upload attachments I'm getting a error msg "access denied" I've contacted Smartsheets support and they told me that I have to generate a API access token key, I've generated one but it didn't help.

If anyone knows how I can resolve that it would be of a great help.

Thanks in advance