First stage is telephonic round. Where they confirm you knowledge about invoice, purchase order, debit and credit and do you use excel, sql.
2nd round is HR round, 4 or 5 people take your face to face interview. They'll be ask about the invoice, purchase order, audit work, past experience, about your silks or internship or certification which is mention in your resume, debit note and credit note, how will you identify error by seeing data, how will you work under pressure, how will you find the invoice is incorrect.
And after that you'll get an assessment
After that the final round will happen virtually where they only check your English and fluency. Just ask about your previous experience, skills, how you improve process, last book you read if reading is your hobby. So chill.
Make sure one most important thing is there no mismatch or error in your resume. You have to submit your updated resume only. Don't mention any skills which you don't know. Just be transparent about everything.