Access Permissions in Transmission

Hi all,

I am having trouble with my Sonarr/Transmission setup.
Running the latest version of dietpi too. Sonarr sends a :file" to transmission to download and it starts. after a few seconds the download suddenly gets an error in transmission.

Error: Permission denied (/mnt/samba/transmission/sonarr/*blah blah*)

This one failed 103mb into a 430mb file…??

What can be done?

I can see the samba mount in /mnt/samba and Sonarr can see it too… There are no errors there??

Any help would be appreciated… Thanks