want to add one more text comment in billing header
i want to add one more text coment field with the existing text shown in header text in BILLING.
For which - i can mentaion my inspection lot comments during my billing doc.
that field will come and after double click i can write some comments.
Kindly tellme the procedure how this tab or field will come.
you can do this through tcode VOTXN and selecting billing documents, header.