I'm trying to figure out how to add two validation rules to One SharePoint list

Question

I'm trying to figure out how to add two validation rules to One SharePoint list.

1. If the user selects 'Risk' from the 'Risk/Issue?' column, then they must not leave the 'Risk Mitigation Plan' field blank.

'Risk/Issue?' Column is a drop down menu,  Risk Mitigation Plan is a multiple line text field 

2. If the user selects 'Closed' from the 'Status' column then the must not leave the 'Closed Date' field blank

The 'Status' field is a drop down menu  and the 'Closed Date' field is a date picker

What formula would help me accomplish this?  Thank you!

--I can change the field types if that helps

Screen shot of the list & validation I'm trying to Implement

Answer 1

Not sure if you're able to use js/jQuery but below is a way to accomplish this using code.

var status = $("select[title='Status']").val();
var closedDate = $("input[title='Closed Date']").val().length;

function PreSaveAction(){
   if(status == "Closed" && closedDate == 0){
      return False;
  }
}

Answer 2

You cannot use multiline text in formula. If you can convert mitigation plan to a single line of text then below formula should work, assuming your other dropdowns fields are choice fields.

Navigate to List -> List Settings -> Validation Settings. Use below formula and add an appropriate error message in 'user message' field.

IF([Risk]="Risk",IF(NOT(ISBLANK([MitigationPlan])),TRUE,FALSE),IF([Closed]="Closed",IF(NOT(ISBLANK([ClosedDate])),TRUE,FALSE),TRUE))