Specifications include, but are not limited to:. The Washington Suburban Sanitary Commission (Commission) is seeking to replace the existing payroll/pension application with a COTS application that meets the business requirements for the new application. The vendor will implement a solution under the direction of WSSC's IT Manager that fully and completely meets the needs expressed in this Scope and in the business requirements. Implementation will include configuring the application to meet the terms of the WSSC Employees' Retirement Plan defined benefit pension plan and related annuity calculations. This includes the extraction, conversion, and loading of retiree and pension data including historical information into the new application. The solution should provide automated, seamless interface to/from other systems through API's and required reports. The vendor will provide training, periodic support and maintenance.