Please Answer my query

Sister Concerns means organisations under the same management. Where the important decisions(control and management) are taken by a person or group of persons managing one or more organisations. 

As discussed in /forum/sister-concern-30252.asp

No act defines the term sister concern. It is just terminology used by many. 

Thanks Sunny.The information you gave will really help me.

Thanks!

-Saumya Agarwal