Functions IF(AND( functions – multiple conditions I get #VALUE or FALSE Error

[Johnpow]

Hello
Trying to create an achievement outcome workbook for students in a debating competition.
I believe I need nested formula which produces Average, Good or Fantastic outcome based on multiple conditions.
Condition #1 - a validation List of student class Levels - F1,F2,T1,T2,E1,E2,E3,M.
Condition #2 – another validation list of achievement number allocated by adjudicators watching / listening to the debators.
Condition $3 – Outcome Gradings. Average, or Good, or Fantastic depending on the above conditions.

This formula seems to work but only with F1.

=IFERROR(IF(AND($P$6="F1"),IF(T15>$AH14,$AF14,IF(T15>$AH13,$AF13,IF(T15>$AH12,$AF12,)))),"")[/B][B]

But when I add another condition (F2), as per the following formula, I get #VALUE error or FALSE error

=IFERROR(IF(AND($P$6="F1"),IF(T15>$AH14,$AF14,IF(T15>$AH13,$AF13,IF(T15>$AH12,$AF12,)))),IF(AND($P$6="F2"),IF(T15>$Ai14,$AF14,IF(T15>$AI13,$AF13,IF(T15>$Ai12,$AF12)))))

I get the same error/s when I add T1,T2,E1,E2,E3 and M to make one long formula.
Currently using IF(AND( - Is such a formula possible?
Maybe I need to use different functions? Maybe Arrays somewhere?
Help please.

 

[joeu2004]

You seem to be getting some help in another forum at
https://www.excelforum.com/excel-fo...ing-if-and-functions-multiple-conditions.html

 

[Fluff]

@Johnpow
While we do not prohibit Cross-Posting on this site, we do ask that you please mention you are doing so and provide links in each of the threads pointing to the other thread (see rule 13 here along with the explanation: Forum Rules).
This way, other members can see what has already been done in regards to a question, and do not waste time working on a question that may already be answered.

 

[Johnpow]

Here is the other link I posted to
https://www.excelforum.com/excel-for...onditions.html