Hi Community
Need some help please, I'm trying to create some formulas to identify "Excess" Stock, but in some cases I haven't used any in 12 Months, so I want to say then the stock will = a "Default Value of 60 Months"
I'm trying to create a % Of Demand, My Average Monthly Usage (AMU) and my Months of Stock (Avg_Mths Stock)
My formulas are below.. and I've attached the Sample excel data, if someone can please advise what I'm doing wrong please. I've also noticed the Avg_Mths Stock) column is coming as a NULL value, not as a numeric value, even though the columns are all numeric (Double)

Formula for % Of Dmd
[Available_Excess_Qty]/[SO & WO 12 Mths Dmd]*100
Formula for AMU Qty
[SO & WO 12 Mths Dmd]/12
Formula for Avg_Mths_Stock
IF ([SO & WO 12 Mths Dmd]=0 + [Available_Excess_Qty]>0)THEN 60 ELSEIF
[Available_Excess_Qty]=0 THEN 0 ELSEIF
[Available_Excess_Qty]/[AMU Qty]<0 THEN 0 ELSEIF
[Available_Excess_Qty]/[AMU Qty]=0 THEN 60 ELSE [Available_Excess_Qty]/[AMU Qty] ENDIF