What is IFNA?
Returns alternative value if expression results in #N/A, otherwise returns the expression result.
Syntax
=IFNA(value, value_if_na)
Example
Formula: =IFNA(VLOOKUP(A1, Data, 2, FALSE), \
Result: Result or 'Not Found'
How It Works
If VLOOKUP returns #N/A, returns 'Not Found'. Otherwise returns lookup result. More specific than IFERROR.