Hello Meena,
There are 2 ways you can calculate limit utilization for deals.
1) End of Day Transaction : This is KLNACHT transaction which we run for a particular valuation date to valuate all the deals under the determination procedure chosen.
2) Single Transaction Check : This can be done with individual deals, where limit is calculated for every single deal. You can do this in the Default Risk Limit tab in FTR_EDIT. But to do single transaction check you should have activated Automatic Integration of FO for limit utilization in customizing for the relevant company code and product type.
External Deals : Whenever you save a transaction in SAP system and you have not yet run KLNACHT transaction to calculate limit utilization for that deal, then it is stored in the interim as an external deal. After a successful run of KLNACHT it gets removed.
Single Transaction Check is not mandatory for the limit utilization, you can do it via KLNACHT also.
Regards,
Sumant