I need to delete snapshot value by using AFSDK
what Function can do it?
You would use the UpdateValue method of the AFData class, and pass the Remove AFUpdateOption.
but snapshot maybe not store in Archive，is it work?
Yep, that will remove it from the snapshot. For example, this removes the snapshot value for a historical tag:
Yes it should work ... unless the tag is locked by buffering but that's another problem.
Retrieving data ...