The main issues that need to be addressed in a lender`s contract are the date, time and location of the service. A supplier contract should accommodate the declaration of work (SoW). A supplier contract should not come into effect without a declaration of work (SoW). It will become enforceable after the signing of both parties. Reliable e-commerce providers work hand-in-hand with their distributors to solve problems, instead of leaving retailers alone to deal with customer service issues. One way to get guidance on the quality of services offered by a provider is to know if it provides to your competitors or other leaders.