Revenue account determination

Dear All,

I have configured revenue account determination in billing document based on Sales Order Type, following the process as mentioned by SAP. The sales order type has to be passed during determination since it does not exist in table VBRK.

Is this OK to determine revenue accounts based on some field which is not present in VBRK? In my case, so far it is working fine. But can it have any wrong implications?

regards

Sudhir