I understand that It's a settled law that the karta can alienate the joint family property with the consent of the other coparceners.
In here, Karta concealed existence of HUF (HUF formed with some self-acquired properties with declaration letter to ITO) and never disclosed its existence to other members of HUF. Now, Karta gave one of two coparcenary house properties with considerable value as a gift (registered as gift deed) to one of the HUF member in its entirety. All other coparceners except one are the witness (signed as witness) to this registered gift deed.
Existence of HUF came into light recently. Is there any relief for all other coparceners as they have no prior knowledge about existence of HUF?