This parameter can be used to determine whether or not you have already reported a given player activity. This scenario might occur for a number of reasons, e.g. poor network, errors that occur in your project when sending, etc.
The amount that you specify indicates the number of times the action has been performed by the player.
This is the date/time that the action is to be recorded. For some circumstances, this shouldn't be necessary, but for others it will. It is good to use if precision is important or if there's a need to "go back in time" and report activities that weren't previously reported.
Default: the current date/time when the request is received.