Involving too many stakeholders who have not been part of the sourcing process can complicate and prolong negotiations. The best approach is to include a limited number of key stakeholders who have relevant expertise and can provide valuable feedback at specific points in the negotiation. This ensures that the negotiation process remains efficient and focused while incorporating essential input from the most knowledgeable participants. References:
* "Negotiation for Purchasing Professionals" by Jonathan O'Brien
* "Supply Chain Management: Strategy, Planning, and Operation" by Sunil Chopra and Peter Meindl