Rejects a VPC peering connection request. The VPC peering connection must be in the <code>pending-acceptance</code> state. Use the <a>DescribeVpcPeeringConnections</a> request to view your outstanding VPC peering connection requests. To delete an active VPC peering connection, or to delete a VPC peering connection request that you initiated, use <a>DeleteVpcPeeringConnection</a>.