Type Mismatch using LOOP/IFERROR/INDEX/MATCH - excel

Question

What I am trying to do is looping through all rows and columns to find the quantity of a part inside a machine. This is searched for based on the article number and the Equipment/machine type. As in this screenshot:
My problem is that the way I have it running now is VERY slow. In the screenshot above is only a small portion of the cells. They go down to +-500 equalling roughly 22500 times the formula:
=ifERROR(INDEX(Datasheet!$B$1:$E$100;MATCH(1;(Datasheet!$D:$D=C$1)*(Datasheet!$B:$B=$AY15);0);4);"")
I want to speed it up using VBA by just giving my static values in all cells.
I have a large part done which I will display below.
The search values (datasheet)
I have it almost complete (I can feel it!) but it keeps returning me the type 13 Type mismatch error. I have found MANY MANY threads on stack overflow and the internet but these fixes do not fix it for myself.
My code:
'set all sheets
'----------------------------------------
Dim Isht As Worksheet
Dim Esht As Worksheet
Dim Dsht As Worksheet
Dim Gsht As Worksheet
Set Isht = ThisWorkbook.Worksheets("Instructionsheet")
Set Esht = ThisWorkbook.Worksheets("Exportsheet")
Set Dsht = ThisWorkbook.Worksheets("Datasheet")
Set Gsht = ThisWorkbook.Worksheets("Gathersheet")
'----------------------------------------
Dim EshtLR As Long
Dim EshtLC As Long
Dim DshtLC As Long
Dim DshtLR As Long
Dim OutputRange As Range
Dim SearchRange As Range
Dim MachineMatchCOL As Range
Dim ArticleMatchCOL As Range
Dim MachineType As String
Dim ArticleNumber As String
Dim StartRow As Long
Dim StartCol As Long
StartCol = Dsht.Range("P10").Value
StartRow = Dsht.Range("P11").Value
'Determine Last column in export sheet.
EshtLC = Esht.Cells(14, Columns.count).End(xlToLeft).Column
'Determine Last row in data sheet.
DshtLR = Dsht.Cells(Rows.count, 1).End(xlUp).Row
'Determine Last row in export sheet.
EshtLR = Esht.Cells(Rows.count, 1).End(xlUp).Row
Set OutputRange = Esht.Range(Esht.Cells(StartRow, 3), Esht.Cells(EshtLR, EshtLC - 9))
Set SearchRange = Dsht.Range(Dsht.Cells(1, 2), Dsht.Cells(DshtLR, 5))
Set MachineMatchCOL = Dsht.Range(Dsht.Cells(1, 4), Dsht.Cells(DshtLR, 4))
Set ArticleMatchCOL = Dsht.Range(Dsht.Cells(1, 2), Dsht.Cells(DshtLR, 2))
'=IFERROR(INDEX(Datasheet!$B$1:$E$100;Match(1;(Datasheet!$D:$D=C$1)*(Datasheet!$B:$B=$AY15);0);4);"")
'Datasheet!$B$1:$E$100 = SearchRange
'Datasheet!$D:$D = MachineMatchCOL
'Datasheet!$B:$B = ArticleMatchCOL
'C$1 = MatchineType
'$AY15 = ArticleNumber
j = StartRow
i = StartCol
For Each Row In OutputRange
For Each Column In OutputRange
MachineType = Esht.Range(Esht.Cells(1, i), Esht.Cells(1, i)).Value
ArticleNumber = Esht.Range(Cells(j, EshtLC - 5), Cells(j, EshtLC - 5)).Value
Esht.Cells(j, i).Value = Application.WorksheetFunction _
.IfError(Application.WorksheetFunction _
.Index(SearchRange, Application.WorksheetFunction _
.Match(1, (MachineMatchCOL = MachineType) * (ArticleMatchCOL = ArticleNumber), 0), 4), "")
i = i + 1
Next Column
j = j + 1
Next Row
It has something to do with the fact that a range cannot equal a value but I have tried for a long time and cannot figure it out.
Also note that the loop probably does not work but that is for a next problem to deal with :-).
I do not expect you to fully create everything but, again, a friendly push is also greatly appreciated.
UPDATE: The line that arises error is:
Esht.Cells(j, i).Value = Application.WorksheetFunction _
.IfError(Application.WorksheetFunction _
.Index(SearchRange, Application.WorksheetFunction _
.Match(1, (MachineMatchCOL = MachineType) * (ArticleMatchCOL = ArticleNumber), 0), 4), "")

Answer 1

Build a dictionary of the Datasheet values using columns B & D joined as the key and column E as the item. This will provide virtually instantaneous 'two-column' lookup for the C15:AU29 table on the Exportsheet worksheet.
Option Explicit
Sub PopulateQIMs()
Dim i As Long, j As Long, ds As Object
Dim arr As Variant, typ As Variant, art As Variant, k As Variant
Set ds = CreateObject("scripting.dictionary")
'populate a dictionary
With Worksheets("datasheet")
'collect values from ws into array
arr = .Range(.Cells(3, "B"), .Cells(.Rows.Count, "E").End(xlUp)).Value2
'cycle through array and build dictionary
For i = LBound(arr, 1) To UBound(arr, 1)
'shorthand overwrite method of creating dictionary entries
'key as join(column B & column D), item as column E
ds.Item(Join(Array(arr(i, 1), arr(i, 3)), Chr(0))) = arr(i, 4)
Next i
End With
With Worksheets("exportsheet")
'collect exportsheet 'Type' into array
'typ = .Range(.Cells(1, "C"), .Cells(1, "AU")).Value2
typ = .Range(.Cells(1, "C"), .Cells(1, "C").End(xlToRight)).Value2
'collect exportsheet 'Article Number' into array
'art = .Range(.Cells(15, "AY"), .Cells(29, "AY")).Value2
art = .Range(.Cells(15, "AY"), .Cells(15, "AY").End(xlDown)).Value2
'create array to hold C15:AU29 values
'ReDim arr(1 To 15, 1 To 45)
ReDim arr(LBound(art, 1) To UBound(art, 1), _
LBound(typ, 2) To UBound(typ, 2))
'cycle through Type and Article Numbers and populate array from dictionary
For i = LBound(arr, 1) To UBound(arr, 1)
For j = LBound(arr, 2) To UBound(arr, 2)
'build a key for lookup
k = Join(Array(art(i, 1), typ(1, j)), Chr(0))
'is it found ...?
If ds.exists(k) Then
'put 'Quantity In Machine' into array
arr(i, j) = ds.Item(k)
End If
Next j
Next i
'put array values into Exportsheet
.Cells(15, "C").Resize(UBound(arr, 1), UBound(arr, 2)) = arr
End With
End Sub

Answer 2

Not sure this exactly meets your needs, nor being the most elegant solution - and running out of time to make this more nicer...
It might not work for you straight out of the box, but i hope it gives you an idea on how to better aproach this.
Sub test()
'set all sheets
'----------------------------------------
Dim Isht As Worksheet
Dim Esht As Worksheet
Dim Dsht As Worksheet
Dim Gsht As Worksheet
Set Isht = ThisWorkbook.Worksheets("Instructionsheet")
Set Esht = ThisWorkbook.Worksheets("Exportsheet")
Set Dsht = ThisWorkbook.Worksheets("Datasheet")
Set Gsht = ThisWorkbook.Worksheets("Gathersheet")
'----------------------------------------
Dim EshtLR As Long
Dim EshtLC As Long
Dim DshtLC As Long
Dim DshtLR As Long
Dim OutputRange As Range
Dim SearchRange As Range
Dim MachineMatchCOL As Range
Dim ArticleMatchCOL As Range
Dim MachineType As String
Dim ArticleNumber As String
Dim StartRow As Long
Dim StartCol As Long
StartCol = Dsht.Range("P10").Value
StartRow = Dsht.Range("P11").Value
'Determine Last column in export sheet.
EshtLC = Esht.Cells(14, Columns.Count).End(xlToLeft).Column
'Determine Last row in data sheet.
DshtLR = Dsht.Cells(Rows.Count, 1).End(xlUp).row
'Determine Last row in export sheet.
EshtLR = Esht.Cells(Rows.Count, 1).End(xlUp).row
'Declare and allocate your ranges to arrays
Dim arrOutput As Variant, arrSearch As Variant
arrOutput = Esht.Range(Esht.Cells(1, 3), Esht.Cells(EshtLR, EshtLC)) 'Not sure what last column is here, but i will make a presumption below that "Article number" is last
arrSearch = Dsht.Range(Dsht.Cells(1, 2), Dsht.Cells(DshtLR, 5))
Dim R As Long, C As Long, X As Long
For R = LBound(arrOutput) To UBound(arrOutput)
For C = LBound(arrOutput, 2) To UBound(arrOutput, 2)
For X = LBound(arrSearch) To UBound(arrSearch)
'If the article number has a match in the search
If arrOutput(R, UBound(arrOutput)) = arrSearch(X, 1) Then 'replace UBound(arrOutput) with the "Article number" column number
'Let's check if the machine number is there as well
If arrOutput(1, C) = arrSearch(X, 3) Then
'both found at the same row, return the value from that row
arrOutput(R, C) = arrSearch(X, 4)
End If
End If
Next X
Next C
Next R
End Sub
PS: You still need to write the values back to the sheet from the array, which you can either do directly range = array or through a loop, depending on your needs.
I`ll try to complete the answer later when i get more time (at work!).