At all levels, project objectives must
be S.M.A.R.T.:

Specific

Measurable

Achievable

Results-oriented*, or Realistic

Time-bounded and Resource-bounded

S.M.A.R.T. objectives mean there is no ambiguity about what is expected, the technical requirements are measurable, the results are achievable/realistic, and the timing for completion is well known by all stakeholders. There is a well defined outcome, controlled by the project team, and the constraints are identified.

* You have to know the target before you jump into the work.