may be transferred among projects or to newly defined projects: Provided further, That no project may be increased or decreased by more than $1,000,000 of cost prior to submitting a request to the Committees on Appropriations of both Houses of Congress to make the transfer and an approval is issued, or absent a response, a period of 30 days has elapsed: Provided further , That funds under this heading may be used by the Interagency Program Office through the Department of Veterans Affairs to define data standards, code sets, and value sets used to enable interoperability: Provided further , That, of the funds made available for information technology systems development, modernization, and enhancement for the development of an electronic health record, not more than 25 percent may be obligated or expended until the Secretary of Veterans Affairs submits to the Committees on Appropriations of both Houses of Congress: (1) a detailed explanation of the solicitation submitted to Cerner Corporation for development of an electronic health record for the Department of Veterans Affairs