Yes, your sisters can challenge the partition deed in court.
Under Indian law, daughters have equal rights to inherit their father's self-acquired property, especially after the Hindu Succession (Amendment) Act, 2005, which grants daughters the same rights as sons in ancestral property.
If the partition was done without their consent and their names were omitted from the family tree, they can file a suit to claim their rightful share.
To challenge the deed, they may: File a partition suit in the appropriate civil court. Seek a declaration that the partition deed is invalid due to lack of consent. Request a correction in the family tree records.
Claim their legal share in the property. It would be advisable to consult a property lawyer to understand the best course of action based on the specifics of the case. Would you like guidance on how to proceed legally?