=IF(AND(A3="OK",B3="OK",C3="OK",D3="OK"),"OK","NOK")
=IF(SUMPRODUCT(--(A3:D3="OK"))=4,"OK","NOK")
ThanksYou should nest AND in IF statement to return "OK" if AND condition is TRUE and "NOK" if it's FALSE.
As well, you need text value your are checking inside AND in "".
Code:=IF(AND(A3="OK",B3="OK",C3="OK",D3="OK"),"OK","NOK")
Alternate method
Code:=IF(SUMPRODUCT(--(A3:D3="OK"))=4,"OK","NOK")
THanksHi,
Another:
=IF(A3&B3&C3&D3=REPT("OK",4),"OK","NOK")
=IF(COUNTIF(A3:D3,"OK")=4,"OK","NOK")
Regards,
Use array formula
=IF(AND(A3:D3="OK"),"OK","NOK")
(ctrl+shift+enter)