Field help (LINFLDOPT)
Parameter used to define whether the corresponding field, to be found in the document lines, must be, for the parameterized transaction: ? invisible to the user (a default value is given to the field based on the document logic, but the column is not visible to the user in entry) ? displayed only (the default value planned in the document logic appears in a column, but the user cannot modify it) ? entered (in that case, the user sees a column containing the fields and they can modify it provided the field is valid).