Returns the estimated number of decision tasks in the specified task list. The count
returned is an approximation and isn't guaranteed to be exact. If you specify a task list that
no decision task was ever scheduled in then
0 is returned.
You can use IAM policies to control this action's access to Amazon SWF resources as follows:
Resource element with the domain name to limit the action to
only specified domains.
Action element to allow or deny permission to call this
taskList.name parameter by using a
Condition element with the
swf:taskList.name key to allow the
action to access only certain task lists.
If the caller doesn't have sufficient permissions to invoke the action, or the
parameter values fall outside the specified constraints, the action fails. The associated
cause parameter is set to
For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF
Workflows in the Amazon SWF Developer Guide.