I need explanation with the INDIRECT formula below...=IF(ISERROR(SUMIFS(INDIRECT("'"&H$6&"'!"&"$G:$G"),INDIRECT("'"&H$6&"'!"&"$R:$R"),$A39,INDIRECT("'"&H$6&"'!"&"$F:$F"),"<>52711",INDIRECT("'"&H$6&"'!"&"$C:$C"),10)),0,SUMIFS(INDIRECT("'"&H$6&"'!"&"$G:$G"),INDIRECT("'"&H$6&"'!"&"$R:$R"),$A39,INDIRECT("'"&H$6&"'!"&"$F:$F"),"<>52711",INDIRECT("'"&H$6&"'!"&"$C:$C"),10))+IF(ISERROR(SUMIFS(INDIRECT("'"&H$4&"'!"&"$A$30:$EO$30"),INDIRECT("'"&H$4&"'!"&"$A$4:$EO$4"),H$5,INDIRECT("'"&H$4&"'!"&"$A$5:$EO$5"),$A39)),0,SUMIFS(INDIRECT("'"&H$4&"'!"&"$A$30:$EO$30"),INDIRECT("'"&H$4&"'!"&"$A$4:$EO$4"),H$5,INDIRECT("'"&H$4&"'!"&"$A$5:$EO$5"),$A39))+IF(ISERROR(SUMIF(INDIRECT("'"&H$6&" "&$A$31&"'!"&"H:H"),$A39,(INDIRECT("'"&H$6&" "&$A$31&"'!"&"I:I")))),0,SUMIF(INDIRECT("'"&H$6&" "&$A$31&"'!"&"H:H"),$A39,(INDIRECT("'"&H$6&" "&$A$31&"'!"&"I:I"))))
Solved by C. S. in 28 mins