I have made a formula in which today() is used multiple times and it returnsa
with an error for no apparent reason? how can i overcome this one?

formula-

IF(LOOKUP(TODAY(),plan!$C$2:$N$2,plan!$C$3:$N$3)=" 3d Backs",' 3d
Backs'!A1:C10,IF(LOOKUP(TODAY(),plan!$C$2:$N$2,pla n!$C$3:$N$3)="3d Locks",'3d
Locks'!A1:C10,IF(LOOKUP(TODAY(),plan!$C$2:$N$2,pla n!$C$3:$N$3)="3d Props",'3d
Props'!A1:C10,IF(LOOKUP(TODAY(),plan!$C$2:$N$2,pla n!$C$3:$N$3)="3d HBR",'3d
HBR'!A1:C10,IF(LOOKUP(TODAY(),plan!$C$2:$N$2,plan! $C$3:$N$3)="2d Back
(c+b)",'2d Back
(c+b)'!A1:C10,IF(LOOKUP(TODAY(),plan!$C$2:$N$2,pla n!$C$3:$N$3)="2d Back
str",'2d Back
str'!A1:C10,IF(LOOKUP(TODAY(),plan!$C$2:$N$2,plan! $C$3:$N$3)="2d Back str
pwr",'2d Back str
pwr'!A1:C10,IF(LOOKUP(TODAY(),plan!$C$2:$N$2,plan! $C$3:$N$3)="2d HBR str
pwr",'2d HBR str
pwr'!A1:C10,IF(LOOKUP(TODAY(),plan!$C$2:$N$2,plan! $C$3:$N$3)="2d locks
str",'2d Locks
str'!A1:C10,IF(LOOKUP(TODAY(),plan!$C$2:$N$2,plan! $C$3:$N$3)="2d props str
ecc",'2d Props str
ecc'!A1:C10,IF(LOOKUP(TODAY(),plan!$C$2:$N$2,plan! $C$3:$N$3)="complex",'Complex Temp'!A1:C10,""))))))))))


Excel always seems to report an error on the 7th TODAY() function. When the
formula is shorter there is no error.