Use of VD01, instead of XD01 / FD01 ,how it will affect the master data

Hi everyone,

I was trying to understand the customer master Tcodes VD01,XD01,& FD01, but was not able to understand completely, still there is confusion i know that the Tcode

• FD01- Company code level & data  will be stored in tables KNA1 and KNB1.
• XD01- Include sales area & data will be stored in tables KNA1, KNB1 and KNVV(With company code data).
• VD01 - Include sales area & data will be stored in tables KNA1, KNB1 and KNVV (w/o Company code data).

Now my question is :

1. Which tcode should be used ,means in which scenario or condition to create the customer master data?
2. If i create customer master data with VD01, instead of XD01 / FD01 ,how it will affect the master data
3. what is the advantage or the disadvantage of using any of the tcode randomly for creating the customer master data.

Regards

Roshan