Condition type is not Recognizing in the sales order

Hi SD experts

One condition type is done the key combination of Material + Material group 1Material group 2Material group 3+Material group 4

In creation of sales order:

1st Material ABC is not fulfilling the requirement of condition type is not active ( it is correct only )

2nd Material DEF is fulfilling the requirement of condition type is also not active ( it is wrong )

3rd Material GHI is fulfilling the requirement of condition type is also not active ( it is wrong )

However if we enter in the following order is working

2nd Material DEF is fulfilling the requirement of condition type is also not active ( it is correct only )

1st Material ABC is not fulfilling the requirement of condition type is not active ( it is correct only )

3rd Material GHI is fulfilling the requirement of condition type is also not active ( it is correct only )

When we analyzed it is come to know that,

a.) If the 1st material combination is relevant to the Condition type than only it will read for further Material

b.) If the 1st material combination is not relevant to the Condition type than system is not determining for any other material also

How to overcome from this

pls help in this

with red...

jeevan.S