How can I combine =SUMIF($B$11:$B$20,$B$25,G11:G20)+F25 &
IF(G26>G25,"ERROR",0)
How can I combine =SUMIF($B$11:$B$20,$B$25,G11:G20)+F25 &
IF(G26>G25,"ERROR",0)
You haven't given enough information; however, this might be what you are looking for:
=IF(G26>G25,"ERROR",SUMIF($B$11:$B$20,$B$25,G11:G20)+F25)
If that doesn't work, update your question explaining more specifically what you are trying to do.