Power Automate: "Create File" action fails with permission error when creating folder and uploading email attachments to Box

Hello,
I am trying to build a Power Automate flow that does the following:

• When an email arrives with attachments,
• Create a new folder in Box using the email subject as the folder name,
• Upload all attachments from the email into that newly created folder.

However, when the flow runs, the "Create File" or "Create Folder" action fails with the following error:

Only admins can create folders in the root due to enterprise security settings
clientRequestId: 53ecd43c-8126-495e-be9e-b2d50d1121fc

Here is what I have tried so far:

• Specified a subfolder instead of the root folder (using both folder path and folder ID).
• Re-authenticated the Box connection in Power Automate.
• Confirmed that my Box account has full permissions (Editor) on the target folder.
• Verified that I can create folders and upload files directly in the Box web interface without any issues.

Question:

• Why does this error occur even when I am not targeting the root folder?
• Is there any additional configuration required for the Box connector or OAuth scopes?
• How can I successfully create a folder (based on email subject) and upload multiple attachments into it using Power Automate?

Thank you for your help!