The number of static buffers to hold the new routes for deferred addition to the NCP clients' routing tables has exceeded the maximum of 500. This may happen when multiple NCP clients have not completed their initialization processes at the same time. At this time, the new routes are not added to the NCP client's routing tables. The static buffers do not become available until after NCPROUTE has received the Inactive Interface List PDUs from the NCP clients. These PDUs tells NCPROUTE that the NCP clients have completed their initialization processes.