Floor below mine lodged a report of leakage at their bathroom ceiling.
Management checked and reported a loose (or deteriorated) discharge pipe end cap.
So basically water came from my bathroom unit (level 7), leaked and damaged level 6 bathroom ceiling.
Management gave 7 days to me (level 7) to seek professional help / to rectify the problem.

The unit is tenanted.
Now, question is... is the landlord or the tenant responsible for the repair cost?

Landlord...

If tenant car breakdown, does landlord pay?

Floor below mine lodged a report of leakage at their bathroom ceiling.
Management checked and reported a loose (or deteriorated) discharge pipe end cap.
So basically water came from my bathroom unit (level 7), leaked and damaged level 6 bathroom ceiling.
Management gave 7 days to me (level 7) to seek professional help / to rectify the problem.

The unit is tenanted.
Now, question is... is the landlord or the tenant responsible for the repair cost?

Floor trap end cap? Did your tenant stick/ rod bang jolok from the floor trap?

Technically, there is no way the loose end cap could have been caused by the upstairs tenant, as the tenant would have no access to the floor below. It is highly likely that the end cap has been loose since day one but went unnoticed due to the upper unit being unoccupied.

When the tenant moved into the unit above and began using the toilet, the leakage started to appear.

The landlord would be responsible for the repairs.

Well there has been cases where the tenant pour acid to clear the clog.
But generally is the owners responsibility.