I’ve found some extra bags in a Lego set (11015). Qr codes are 6201540 and 6172064. Any ideas? Thanks!
Two of the three booklets show a relation between numbered bag and mini-models:
It's possible that OP misplaced or is missing one of the instruction booklets, hence the confusion.
(Though, IMO, being a "classic" set of mostly generic bricks, the fun is forgetting about the instructions).