How to calculate the total number of customers for 3 types of "Sales" - DAX formula?

[EZV12]

Hello,

May you please help me to find the DAX formula to calculate the total number of customers who generated turnover, placed firm orders and set forecast?  I have already all the data for the 3 types of Sales, but i don't know how to get the right "Mesure DAX" to calculate the total "distinct" number of customers who made the 3 types of sales.

Thank you in advance for your help.

Best regards

EZV12

[Anonymous]

DAX can't be written in a vacuum. One has to know the model schema.

[PC2790]

Can you please provid your sample data?