Subsale? Your seller haven't got the title from developer?

Meaning subsale la ....

Your neighbours all got their individual/strata title dy?

Quite similar to my case
I bought a townhouse and the vendor din't get his title from the developer (bankcrupt) when he should before selling to me
So I ask the vendor to pay for the transfer, as the property when sell to me, should come with the title together
If i'm not wrong this is called perfection of transfer (POT) = developer xfer title to vendor
But this is my case la, by right i think the vendor should pay for it

Maybe other sifus have better explanation