Incremental Snapshot / Restore

Thanks for the reply David !!

Basically, i was trying out this scenario, to figure out if i can implement a cleanup policy that cleans up those snapshots created before a particular date

As per your clarification, if i try to snapshot a second time in "snapshot1" ,i see this exception
{
"error": "InvalidSnapshotNameException[[repo1:snapshot1] Invalid snapshot name [snapshot1], snapshot with such name already exists]",
"status": 400
}

How do i mention that this is incremental ? Am i missing something ?