Thanks - Attached is my Service-SMB screen -> sorry, cannot see log level.
Please find below getfacl output:
getfacl /mnt/zpool1/data1
# file: /mnt/zpool1/data1
# owner: nmax
# group: wheel
owner@:rwxp--aARWcCos:-------:allow
group@:rwxp--a-R-c--s:-------:allow
everyone@:rwxp--a-R-c--s:-------:allow
truenas% getfacl /mnt/zpool1
# file: /mnt/zpool1
# owner: root
# group: wheel
owner@:rwxp--aARWcCos:-------:allow
group@:r-x---a-R-c--s:-------:allow
everyone@:r-x---a-R-c--s:-------:allow