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ISERROR

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Applies to: Calculated column Calculated table Measure Visual calculation

Checks whether a value is an error, and returns TRUE or FALSE.

Syntax

ISERROR(<value>)

Parameters

Term Definition
value The value you want to test.

Return value

A Boolean value of TRUE if the value is an error; otherwise FALSE.

Remarks

  • For best practices when using ISERROR, see Appropriate use of error functions.

  • This function is not supported for use in DirectQuery mode when used in calculated columns or row-level security (RLS) rules.

Example

The following example calculates the ratio of total Internet sales to total reseller sales. The ISERROR function is used to check for errors, such as division by zero. If there is an error a blank is returned, otherwise the ratio is returned.

= IF( ISERROR(  
       SUM('ResellerSales_USD'[SalesAmount_USD])  
       /SUM('InternetSales_USD'[SalesAmount_USD])  
             )  
    , BLANK()  
    , SUM('ResellerSales_USD'[SalesAmount_USD])  
      /SUM('InternetSales_USD'[SalesAmount_USD])  
    )

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IFERROR function
IF function