Error 35 can be that the Snapshot was assigned an additional task with a
schedule, when it was assigned for Data Replication. When using Data Replication assign a dedicated Snapshot for each replication task.
How many Snapshots do you have?
What does the GUI show for the % in use for the Snapshot when you use the pull down arrow at the location of MAINTENANCE -> snapshot -> Function: Snapshot tasks?
The GUI shows 12% Snapshot using.
And i have only one big NAS Volume and one assign snapshot for this volume.
On this NAS Volume i have 25 Shares as DataReplication.