Date in formula

Jennifer Lawson

I have the following formula set to add a date to a column once information has been added to the selected columns on the same row.

=IF(AND(ISBLANK([HCPCS/CPT/Supply Code]@row) = false, ISBLANK([Code Description]@row) = false, ISBLANK([Clinic Cost per Vial/ pre-filled syringe]@row) = false, ISBLANK([Vial Size]@row) = false, ISBLANK(Manufacturer@row) = false, ISBLANK([Desired Contact Date]@row) = false, ISBLANK([SharePoint Ticket #]@row) = false), TODAY(), "")

The problem is the formula updates the date every time someone saves the sheet. I want the date to be entered into the cell only once and not update after that as I want to know what date the information was entered as well as having an automation to send a message when the date is entered. With TODAY() in the formula the date updates and the automated message sends every time the sheet is saved. Is there a way to have the date added once and not changed after that?