Most contracts fall within the strategic scope of an organisation - your main aim is to make sure that you can tick the 5 R's of procurement - securing the service/product at the right price, right quality, right quantity, right time and right amount of inventory.
What happens after the ink has dried on the bottom-line can however really determine the success or failure of the agreement. What happens to the psychological agreement? What happens when your company doesn't get those Gucci bags delivered on time to boost sales in the 'Most Awesome Sale of the Year" or the caterer provides you with undercooked prawns that sends your guests to the nearest Casualty in mere moments... No excuses rendered...
It will be interesting to hear your stories and how you overcame the obstacles presented by the psychological / behavioural hindrances experienced during your supplier management...