This RowStatus object creates, modifies, or deletes an SNTP server entry, and the description notes that once a row is active, no other object in that row can be changed except this status column itself. An administrator uses it to add a new time server to the device's SNTP configuration or remove one that's no longer trusted or reachable. Setting this to notInService before adjusting the address or version would allow those otherwise-locked fields to be modified again.