Rajat,
Both members have given some good information, explanation. I will give a non SAP example which might make things easy and simple to related to -
In a society, there are several buildings, take two buildings A and B.
Both these have flat 101.
When they receive a letter, the address comes with A-101 or B-101.
SAP:
Suppose you go to VK11 and create a condition record for table 905.
And then you go to VBO1 and create a rebate condition record for table 905.
If you want to see the details of 905, how will SAP know you want to view the pricing or rebate condition record? For this, in SE16N, you need to give:
for pricing A905
and for rebate KOTE905
TW