SAP Message 37099 - & has column headers, which will also be deleted

Diagnosis
You are on the "Table Control Attributes" screen and want to reset the"With column headings" attributes.
The table control already contains column heading elements.

System Response
If you continue, the system deletes all of the column heading elementsbelonging to the table control.
If you are in modification mode, the system only deletes those columnheading elements that you created in modification mode.