Represents a combo box in a form.
To enable a combo box, bind the combo box to a data source (UserDataSource or DBDataSource) using the DataBind property.
Note: Please avoid using "ERROR" as a valid value for a combobox, because "ERROR" is used as a reserved word in SAP Business One client.
As a workaround, you may use " ERROR " (with some blank spaces) or other similar words in the XML file.