False error message, when using if

Hello all,
Hope you can help me what am I doing wrong with this formula,

What I need in the formula is to count the number of characters in a cell and to return a message ("Review" or "OK") depending on the condition given.

For example, if the cell A2 is specified as "hourly", then I need that the value in B2 is no longer than 9 characters and if so, C3 cell display "Review" or if B2 is shorter that 9 characters display "OK"

This is the formula I'm using:

=IF(A2="Hourly",IF(LEN(B2)>9,"Review",IF(LEN(B2)>6,"Review","OK")))

It works when the cell A2 is specified as hourly, however, if A2 have any other value it displays a FALSE error, and what I need is that if A2 is not specified as hourly validate that B2 cell is not longer to 6 characters, and display "OK" or "Review" depending on the compliance of the condition

Hope I made myslef clear,

Thanks for your help

First, FALSE isn't an error.. It's just the opposite of TRUE.

Anyway, in your formula the False part of the first IF is omitted, so it just returns FALSE.
If you want to see something else when A2 does NOT = Hourly, try

=IF(A2="Hourly",IF(LEN(B2)>9,"Review",IF(LEN(B2)>6,"Review","OK")),"Something Else")

Thank you!,

this is very useful information!, I'm not that much familiar with the "and" "or" functions, and they seem to work perfectly for this kind of scenarios.

Appreciate the help
Regards