You are the business analyst for your organization.

 A schedule constraint is a limitation or restriction on the time available to complete a project or a task. A schedule constraint can be imposed by the organization, the customer, the stakeholders, or the environment. A schedule constraint can affect the scope, quality, cost, and risk of the project or the task. In this case, the 60 day implementation is a schedule constraint that limits the duration of the project and the scope of the changes that can be made to the existing web services. References: BABOK Guide v3, page 36; CBAP / CCBA Certified Business Analysis Study Guide, page 74.