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Regular Visitor

## Measure Misunderstanding

Hi, I'm trying to create a measure that calculates my top 10 buyers/customers who have bought an specific product (my top product from an specific year) which is calculated with another measure called Mas Vendidos, so here is my code:

```Top Clientes =
VAR
Prod = [Mas Vendido]
VAR
Cliente = VALUES(Clientes[CompanyName])
RETURN
CALCULATE([Ventas Total];
FILTER(Cliente;
RANKX(ALL(Clientes[CompanyName]); [Ventas Total];;DESC) <= 10); Productos[ProductName] = Prod)```

The thing is it returns an error:

"...a table of multiple values was supplied where a single value was expected"

And if I delete the Prod variable and change it at the end with "Halter Dress" (my top product) then it is correct.

```Top Clientes P =
VAR
Cliente = VALUES(Clientes[CompanyName])
RETURN
CALCULATE([Ventas Total];
FILTER(Cliente;
RANKX(ALL(Clientes[CompanyName]); [Ventas Total];;DESC) <= 10); Productos[ProductName] = "Halter Dress")```

PSD: Mas Vendidos Code:

`Mas Vendido = TOPN(1; ALL(Productos[ProductName]); [Ventas Total];DESC)`

Error (with Prod variable)What I want it to show (with "Halter Dress" instead of Prod variable)

1 ACCEPTED SOLUTION

Accepted Solutions
Senior Member

## Re: Measure Misunderstanding

I believe the error is because Dax engine has detected that your TOPN function in "Mas Vendido" could return more than one value (in a tie situation)  So I think you eithe either need to test if "Prod" variable has more than one row and respond accordingly, or perhaps wrap it in a FIRSTNONBLANK call like so:

`Mas Vendido = FIRSTNONBLANK ( TOPN(1; ALL(Productos[ProductName]); [Ventas Total];DESC), 1 )`
2 REPLIES 2
Senior Member

## Re: Measure Misunderstanding

I believe the error is because Dax engine has detected that your TOPN function in "Mas Vendido" could return more than one value (in a tie situation)  So I think you eithe either need to test if "Prod" variable has more than one row and respond accordingly, or perhaps wrap it in a FIRSTNONBLANK call like so:

`Mas Vendido = FIRSTNONBLANK ( TOPN(1; ALL(Productos[ProductName]); [Ventas Total];DESC), 1 )`
Regular Visitor

## Re: Measure Misunderstanding

Thanks a lot. It solved my problem just how i wanted it.

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