how I Create a calculated column in SharePoint and writing formula using lookup columns, other.
I want to create a calculated column that the field in the formula I use lookup column
plz, help me!
Unfortunately, Lookup columns
cannot be referenced in a calculated column
formula.
Check The Supported and Unsupported Columns in SharePoint Calculated Column Formula.
The suggested workaround
Check the detail steps at How to use Lookup field in SharePoint Calculated Column Formula.