In most cases, 3pl contracts for fulfillment services are three years or longer. Logistics service level agreement template. A service level agreement, often abbreviated as sla, is used in it and professional services to. Web this article discusses 11 indicators to keep the services offered with your 3pl as high as possible, which in turn will provide cost savings while servicing the customer at the. If you need to write an sla then using a template ensures you don’t miss any vital information, get yours below.