To separate the data into different sheets based on the natural account number, you can use VBA code in Excel. Here is an example code that you can modify to fit your specific needs:
Sub SeparateDataByAccount()
Dim sourceSheet As Worksheet
Dim targetSheet As Worksheet
Dim lastRow As Long
Dim accountNumber As String
Dim row As Long
' Set the source sheet where the data is located
Set sourceSheet = ThisWorkbook.Worksheets("SourceSheet")
' Loop through each row in the source sheet
For row = 2 To sourceSheet.Cells(Rows.Count, 1).End(xlUp).Row
' Get the account number from column A
accountNumber = sourceSheet.Cells(row, 1).Value
' Check if a sheet exists for the account number, create one if it doesn't
On Error Resume Next
Set targetSheet = ThisWorkbook.Worksheets(accountNumber)
On Error GoTo 0
If targetSheet Is Nothing Then
' Create a new sheet for the account number
Set targetSheet = ThisWorkbook.Worksheets.Add
targetSheet.Name = accountNumber
' Copy the headers from the source sheet
sourceSheet.Rows(1).Copy Destination:=targetSheet.Rows(1)
End If
' Find the last row in the target sheet
lastRow = targetSheet.Cells(Rows.Count, 1).End(xlUp).Row
' Copy the current row of data to the target sheet
sourceSheet.Rows(row).Copy Destination:=targetSheet.Rows(lastRow + 1)
Next row
End Sub
The code will loop through each row in the source sheet, check the account number, and copy the row to the corresponding sheet based on the account number. If a sheet does not exist for a particular account number, it will create a new sheet and copy the row there.
Make sure to adjust the code according to your specific column and sheet names.