You can edit invoice detail optional fields on the A/R Invoice Entry screen.
To change the optional fields for a document detail:
Accounts Receivable > A/R Transactions > Invoice Entry.
An Optional Fields screen appears, displaying any invoice detail optional fields that are marked for automatic insertion.
You can change the default value that appears for an optional field:
Note: If the optional field allows blanks, you can leave the value field blank.
When you specify a value that is defined on the Optional Fields screen in Common Services, the description for the value is also displayed.