The purpose of a SOO is to provide contractors with maximum flexibility to conceive and propose innovative approaches and solutions. However, in some cases, there may be constraints that the government must place on those solutions. For example, core financial systems used by federal agencies must comply with requirements of OMB Circular A-127 and the guidance of the Joint Financial Management Improvement Program. Acquisitions related to technology will need to conform to the agency's information technology architecture and accessibility standards. In addition, there may be considerations of security, privacy, and safety that should be addressed. There may also be existing policies, directives, and standards that are constraining factors. The integrated project team should work with program managers, staff, customers, and stakeholders to identify these and to confirm their essentiality.