Rummy sets match a rank, and sequences run in one suit

Same rank makes a set. Consecutive cards of one suit make a sequence. Those are different melds, and Indian rummy will not treat a hand of sets as finished. You need sequences, including one pure sequence of natural cards, before the sets count. A pure sequence is three or more cards in order, same suit, no wild standing in. An impure sequence may use the wild. A set may use the wild. Neither replaces the pure sequence.

Sequences, one of them pure, come first

Take a concrete hand. Spade 4, spade 5, and spade 6 are a pure sequence. Heart 9, heart 10, and a wild used as heart jack are an impure sequence. King of clubs, king of diamonds, and king of spades are a set. That group of nine cards is the start of a legal shape. Add another set or a longer run to cover the remaining cards, discard the spare, and the show can be legal. Swap the pure spade run for three queens and the show fails, even if every other meld is perfect. The queens are a set. They are not a sequence.

A thirteen-card shape you can check

Sort the hand into those two piles at the start of the turn. If you cannot name one pure sequence, the sets are a project, not a declaration. Discard with the pure run in mind. A joker that would make a pretty set of aces does not repair a missing spade run. On a common points sheet the first drop is 20 and a wrong show is 80, and houses differ, so read the table. The meld rule itself is stable: sequences first, one of them pure, and only then do the sets matter.