The MATCH function is used to determine the position of a value in an range or array. Whenever I encounter a VLOOKUP or MATCH function failing my first impulse is that one cell has trailing spaces. Click on the references within the formula and press the F4 key on the keyboard to change the reference from relative to absolute.
So these are some of the common Excel COUNTIF function issues and its fixes.
For example on the left-hand side you can see Customer ID looks similar to numbers. For example on the left-hand side you can see Customer ID looks similar to numbers. The arguments are DATE year month day. Unless you know what you are up to you should always use FALSE which means Exact Match as your fourth VLOOKUP argument.