TDP2072 "devicename" IS NOT BEING USED BY TDP
A TDP command specified the name of a Database communication device that is not currently being used bt TDP.
Either an ATTACH command, issued explicitly or implied by a START command, has not been previously issued, or a DETACH command has removed the device.
If the device name was mistyped, re-issue the command with the correct device name. Otherwise, first ATTACH or START the device, then re-issue the command.