How to update Update Custom Field in KNVV using DEBMAS IDoc

Hi Experts,

I am having one issue in inbound IDoc .

As per requirement we have created one custom field in KNVV , We have to populate this field using one inbound IDoc DEBMAS07.

I am not getting any exit for this , Please help on this .

As of now I found exit EXIT_SAPLVV02_001 , We can update our custom field in this Exit but in that case I am not sure which FM we should use to populate this field , I don't want to use MODIFY DATABASE TABLE .

Please suggest proper solution for this .

Thanks in Advance !

Regards,

Shyam Sunder Goyal