Discount received - Control A/Cs

Hi John, I hope you are all well. I wanted to ask the following - Opening balance on list of individual payable ledger balance - 19,765 Opening balance of payable ledger account - 21,832 Discount received was not entered in list of balances. I deduced it must be reduced from list of balance. But I wanted to be sure by asking you. Is it right to reduce it ?