As per content in yang model last-transfer-time & transfer-status attributes are read only (config false). But ODLUX UI is allowing to enter these parameter values while adding tabular index. Please find the attached screen shot

leaf last-transfer-time {
config false;
type string;
reference
"Device.FAP.X_0005B9_FileTransfersEnh.

.LastTransferTime";
description
"The date and time when the last file transfer was complete";
}

leaf transfer-status {
config false;
type string;
reference
"Device.FAP.X_0005B9_FileTransfersEnh.

.TransferStatus";
description
"The status of the last file transfer
Note VC notification shall be sent for filenames ServiceConfig and DeviceGuiConfig.";
}