Explanation of the contracted solution (what is and what is not the solution / in scope)?
Where does the contract state client responsibilities for providing data, providing approvals / sign offs, performing project and change management?
when can go lives be changed for free?
how is a go live change charged?
when do projects start?
How to know when each part of the solution starts and goes live?
How to know if parts of the solution are implemented in synch or de-synched?
How does the provider implement the contracted solution?
How does the provider support the contracted solution when it is live?
Roles and responsibilities of Provider (Implementation, Operations etc) and client?
Successful International Project Management 