Detecting Mandatory Fields
When you enter data, you might see a red asterisk next to a field. The asterisk means that the field is required for a certain process. For example, you're about to post a transaction, but you've not filled in an important field.
The visual clue doesn't force you to fill in the field. The red asterisk is a reminder that you're blocked from completing a process.
Examples
On the Customer Card page, the red asterisk appears in the Name field, in the Tax Area Code field, and in the posting group fields to indicate that you can't post a sales transaction for the customer unless the fields are filled.
On the Item Card page, the red asterisk appears in the Description field to indicate that you can't enter the item on a document line, such as a sales order, unless this field is filled.