This read-only INTEGER uses a bitmap where each bit represents a table type (FAT, GAT, MAT, etc.) that the registering subsystem has requested from Routes Distribution during startup. Network engineers consult this to verify that a subsystem registered with the correct table requirements and didn't miss critical routing information. For example, a bitmap value where only FAT and GAT bits are set means the subsystem intentionally requested only forwarding and gateway tables, not management data.