We can see list of Memorandum Vouchers from

Memorandum voucher is a special voucher which are used to record transactions temporarily in tally. It is a Non-Accounting voucher whose entries do not affect accounts. The entries in this voucher are not posted into ledgers, instead are stored in a separate Memo Register.
To view all the memorandum vouchers, go to
Gateway of Tally > Display > Exception Reports > Memorandum Vouchers