I have the same states and transitions defined for two type of work items (User Story and Task) and I would like when some work item is transitioned in that particular state that all child work items that have the same state and transitions are set with this state.
Example:
User Story and Task have state Postponed, and for example I have User Story that have 3 child work items, when I change state of parent User Story to Postponed all child work items that have state Postponed are changed automatically to state Postponed
This is certainly useful functionality but currently there’s no support for it. You can use the TFS-API to invoke state changes. This post provides a related example.