Update Custom fields in DFKKOP table

Hi all,

I have a requirement of updating 2 custom fields Project Id and Location description in DFKKOP table, the data is coming from SD while invoicing to FICA.

I am using FQEVENT 4000 to update the fields using structure FKKRW_ACCIT, but it is not updating the table.

Is there any other Event that needs to be updated for the same?

Quick Response would be appreciated.

Regards,

Ginni