Here, I thought you mean 0sales_doc by quotation.Didnt yoou mean this?Since quotation is not a char it is a calculated key figure.
I tried:
number of quot= counter for sales doc and the key figure inside is 1rowcount.Then, number of client= counter for 0cust_sales and the key figure is the number of quot.
The output for the number of client was 3 .And when I put 0cust_sales into rows I actually see 3 customers.But one of them have no quotation as provided by the screenshot of my first entry.What I want to see was 3-1=2.