Questão jurídica principal
Whether the appellant's claim for correction of the account/depot balance was sufficiently substantiated
Decisão extraída
No. A balance-correction claim had to be supported by concrete allegations showing each unauthorized transaction and the resulting balance at the time of suit, including intervening value changes not attributable to the bank.
Fundamentação extraída
The appellant relied on a historical balance and annexes, but did not set out a calculable relationship between the claimed amount and the development of the depot after January/March 2000. The court held that market changes, interest, and the appellant's own transactions had to be addressed to permit any calculation.