The ISERROR function is used to test if a value is an Excel error value.

ISERROR takes 1 required argument and no optional arguments:

Syntax: ISERROR(value)

#1)
Using the ISERROR function:
#2)
The arguments for the ISERROR function are:
Argument Required? Description
value Required Value refers to any error value (#N/A, #VALUE!, #REF!, #DIV/0!, #NUM!, #NAME?, or #NULL!).

Summary

The ISERROR function is used to test if a value is an Excel error value.
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