Here is a **formal, professional requirement clause** you can insert into your Sourcing Requirements document: --- ### Supplier Responsiveness Requirement Suppliers must demonstrate the ability to respond promptly and effectively to all communications, including but not limited to requests for quotations, technical inquiries, order confirmations, and issue resolution. * Acknowledgement of inquiries must occur within **[specified timeframe, e.g. 24 hours]**. * Substantive responses or action plans must be provided within **[specified timeframe, e.g. 48–72 hours]**, unless otherwise agreed in writing. * Suppliers must designate a primary point of contact responsible for timely communication. * Failure to meet responsiveness expectations may negatively impact supplier evaluation and ongoing approval status.