Hi there, could you please tell me what is wrong with this function: =IFERROR(VLOOKUP(LEFT(A4,4)&"_"&B4&"_"LEN(A4:B4),CustomerTable,2,FALSE),0). It is returning an error value and I am pretty sure it is to do with the LEN section but can't work it out
Solved by C. J. in 21 mins