Hello,
I would like to make a collumn validation based on List, but I am getting every time an error.
I would to set a validation: if the user choose from a dropbox collumn a value for example "confirmed" then the user have to write a date to the collumn: "Valid date". If the user not wrote the date, he can not save the item.
=IF([Status]="Confirmed",IF([Valid date]<>"",True,False),True)
I wrote the formula from sources from the internet, but it is not working. Every time, when I want to save the validation formula, I am getting an error: The formula contains a syntax error or is not supported.
Could you please anyone help me?
Thanks in advance.
Best regards,
Stefan