audit turnover for 2017-18 under mvat

IS THERE ANY CIRCULAR FOR THE SAME REGARDING TURNOVER LIMIT OF RS.25,00,000/-

MY TURNOVER FOR INCOME TAX IS BELOW 1 CORE SO NO TAX AUDIT IS APPLICABLE.

BUT WHILE UPLOADING VAT AUDIT REPORT ERROR COMING THAT TAX ADUIT DATE IS MANDATORY IN VAT AUDIT FORM.

NOW IF THERE NO INCOME TAX AUDIT WHAT SHALL BE THE SOLUTION FOR THE ERROR???

Is it mandatory to do the VAT Audit if Only my Purchases Turnover is Crossed the 25 Lakh limit during the Period April to June 2017?

Yes. Since the sec 61(1) says "1) Aggregate Turnover of Sales or 2) Turnover of Purchase". So if either of the two crosses limit given, audit is applicable. 

Link for reference: https://mahagst.gov.in/en/accounts-be-audited-certain-cases