For Transfers, not Uploads, if your transfer is encountering the error Permission Denied - “Path Not Allowed”, I would normally respond with the following.
This category of error that you’re encountering indicates that your identity may not have the appropriate permissions or there's a blocking policy in place (on the Endpoint hosting the Mapped Collection) preventing you from accessing the directory that the Mapped Collection is based on.
If you are logged in with the appropriate identity, we recommend directly contacting (via email) the Endpoint Admin(s) for further assistance as the Sharing Restrict Paths and/or Restrict Paths policies (enforced at the Mapped Collection and Storage-Gateway layers respectively) may need to be adjusted.
Please feel free to share the contents of this email with them, especially the error message you're encountering. If the Endpoint Admin(s) encounter any questions or concerns, please feel free to refer them to us and we'll be happy to help.
This is all assuming that you’re writing to a different path than the one you previously used while submitting the transfer via the webapp. Otherwise, I'd recommend opening a support ticket with us so that we could investigate further (sup...@globus.org).
Hope this helps.
Best regards,
Gigi
Globus Help Desk