SALES RETURN IN CASE OF GOVT CONTRACTOR

RESPECTED SIR/MEDAM

I AM WORKING IN PARTNERSHIP FIRM AS AN ACCOUNTANT, WHO IS GOVT. CONTRACTOR AND ENGAGED IN GOVT. WORK LIKE CONSTRUCTION AND DRAINAGE LINE.

MY QUERY IS WE HAD WORKED IN ONE DEPARTMENT BEFORE 2017-18, AT THAT TIME DUE TO SOME CALCULATION ERROR WE OVERCHARGED SOME OF AMOUNT FROM DEPARTMENT, AND NOW DEPARTMENT AUDITING THAT WORK AND FOUND THAT MISTAKE AND THEY DEMAND FOR THAT SUCH OF AMOUNT.

SO NOW WHAT WILL BE THE PROVISION IN ACCOUNTING BOOKS IF WE RETURN THAT AMOUNT.