if youre willling then simplify it to this;
transmission
- change the docker volume from
/volume1/Content/Download/Torrents:/downloads
to /volume1/Content:/Content
- change the transmission download location from
/downloads
to /Content/Downloads/Torrents
nzbget
- change the docker volume from
/volume1/Content/Download/Usenet:/downloads
to /volume1/Content:/Content
- change the nzbget
MainDir
path from /downloads
to /Content/Downloads/Usenet
sonarr
- change the docker volume from
/volume1/Content:/data
to /volume1/Content:/Content
- add a new root folder of
/Content/Collection/TV Shows
- use the series > mass editor page, select all, change root folder to the new location
- delete the old root folder
that will give you a common volume path of /Content
across all your containers (no need to prune to cleanup) and you wont need any remote path mappings. it also allows for file moves instead of copies so it will be much faster in that regard.
PUID=1024 and PGID=100 is the admin user and the administrators group on a synology nas so access should not be an issue - unless you somehow managed to remove it or made it read only? you can use file manager in dsm to work out what permissions are set on the /volume1/Content
folder and the Collection
and TV Shows
folders as well. basically check the whole structure to ensure admin and administrators has full control, and inherits that in lower levels.
you may want to think about creating an account/group specifically for your media management that only has access to the appropriate media paths later if you want to make it more secure.
note - also check the download client entries in sonarr for nzbget and transmission. make sure you have a category set so that any other content you download with them outside of sonarr is not seen or touched by sonarr.