When an applicant household is determined eligible to participate in the Supplemental Nutrition Assistance Program (SNAP), the household is assigned a certification period. The responsibility for ensuring the household's continuing eligibility during the certification period lies both with the client and the Department. The client must inform the Department of any changes in household circumstances that may affect household eligibility. The Department must act to ensure that the SNAP household receives the benefits to which it is entitled on time and in the right amount. The actions are called additional certification functions.