Gilithin, on 2024-January-07, 15:39, said:
Has to be? There also has to be a way of finding a 4-4 spade fit if Opener is 4=4=3=2, so if you play this as 4SF, either 2♣ denies 4 spades or (more likely) 2♥ promises real clubs and Opener rebids 2NT with a big balanced hand. As long as everything is consistent, it is fine. You might also want to consider restricting the 2♣ response more than just to INV+. You have a lot of bids available here to show minor-oriented hands so I am sure there is a better division. Maybe a look at the 1♠ response would offer a better way forward than discussing this 2♠ call in isolation.
2♥ is unavailable in this auction, partner broke the transfer to 2♥. In an uncontested auction , we have 1C 1S 1nt as 6-10, rightsiding 3nt, with 4M-5D+ GF R bids 2M
We have 1♣ (X) 1♠ as transfer to 1nt 6-10. or could be right siding 3nt