How do i clear my 2018 discrep report. it journal entries. I want it off my p and l report. thanks

This is a hard one to understand, you have an accountant, first he allows for a 20K discrepancy and then you do not ask the guy you are paying to do this kind of thing, how to get it done.

A discrepancy means you can not account for that much money, it left the bank and you have no idea.

To get rid of it, you need to move it to income or an equity investment. Use a journal entry, debit income or equity and credit the discrepancy account (assumes it is positive on the P&L)