Show Number On Sheet1 From Cell On Sheet2 If Cell Next To Cell Containing Number Filled

SAMPLE FILE "error_finder.xlsx (36.5 KB)" attached...

The VP of our company needs me to create a spreadsheet.

For this s/s I need the following:

Imagine 2 sheets in Excel...

sheet1
sheet2

sheet2 has sequential numbers in column1 starting in row2 with the number 1 until wherever..., so cell A2 has number 1, cell A3 has number 2, etc...

Manually, a user has to fill in certain text next to a number.

This for example would look something like this:

_|A| B
-|-|-----------------------------------|
1| | Error-description
-|-|-----------------------------------|
2|1| Whatever the 1st error would be...|
-|-|-----------------------------------|
3|2| Whatever the 2nd error would be...|
-|-|-----------------------------------|
4|3| Whatever the 3rd error would be...|
-|-|-----------------------------------|
5|4|
-|-|-----------------------------------|
6|5|
-|-|-----------------------------------|
and so on...

All this would be on sheet2

In a cell on sheet1 I now need the number from column A displayed, that has the latest entry in column B.

In the example above this would have to be the number 3 in cell A4, because right next to it (in cell B4) is the last entry "Whatever the third error would be..."

Addition: There are several sheets, each sheet stands for one error listed on sheet1 in column A

sheet1 for example would look like this:

_|____A____|_B_|_C_|_D_|
-|---------|---|---|---|
1|_________|833|933|934|
-|---------|---|---|---|
2| error 1 |___|___|___|
-|---------|---|---|---|
3| error 2 |___|___|___|
-|---------|---|---|---|
4| error 3 |___|___| 3 |
-|---------|---|---|---|

In this example, because "whatever error" (cell B2 to B4 on sheet2) was found on press 934 was the 3rd error (cell A4), the number 3 (cell A4) would have to be populated on sheet1 in cell D4.