A6:A57 (Is the list of Employee Names)
B6:B57 (Is the Employee ID Number)
F7 (To enter the Employee ID Number required, then when it matches any
number in B6:B57, then the Employee Name appears. Also note that F7 is
located to another sheet within that File.)
Think you've switched the columns A & B around in the descript above,
compared to what was inferred in your orig. post <g>
Try in say, G7 (on the same sheet as the input cell F7), either:
=INDEX('Allowances Summary'!$A$6:$A$57,MATCH(F7,'Allowances
Summary'!$B$6:$B$57,0))
or, with the error trap:
=IF(ISNA(MATCH(F7,'Allowances Summary'!$B$6:$B$57,0)),"",INDEX('Allowances
Summary'!$A$6:$A$57,MATCH(F7,'Allowances Summary'!$B$6:$B$57,0)))
If you still get no matches where there obviously should be, one guess is
that the employee id numbers in: 'Allowances Summary'!$B$6:$B$57
are text numbers while those entered in F7 are real numbers, thus throwing
the matching off.
Try this to convert: 'Allowances Summary'!$B$6:$B$57 to real numbers. Select
any empty cell and copy it. Then select / right-click on the range:
'Allowances Summary'!$B$6:$B$57 and choose Paste Special > Check "Add" > OK.
This operation will convert all the text numbers to real numbers for proper
matching. Try the above, let us know how it goes.