A partner in business can be employee in bank ??

Plz Guide...

My Sister is a partner in my fathers business for 20% from 2015. Recently she got job in Axis Bank as Asst. Manager. While applying for Business Loan Axis Bank manager told that She cant be a partner in a firm as she is an Employee in bank. He is not sure about it so he advised to take tax consultants opinion.

Please guide me whether my sister has to withdraw her partnership from business or she can continue as a partner along with her job in Axis Bank.