And looks like, you didn't get my point. Let me explain it again. I know very well, that not only in SBC - MYS route, but in many other routes in India, the same tradition is followed (i.e. coaches are marked as D, but they serve as UR GEN). But my point is, when you have mentioned other D-marked unreserved coaches as GEN and only those 4 reserved coaches as D1-D4, when what is the point in writing the rake notes in extra? It is already visible that those 4 coaches will be reserved only. Understood? Now, please do the needful.