Generating invoice numbers using excel [reader questions]

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Michelle, Who is a sweet lady and regular reader of the blog sent me this question via e-mail. (aside: why is she a sweet lady? Because she saw the new cell post and sent me pics of her son and told Jo and me are about to encounter most amazing experiences of our lives 🙂 )

I handle the invoices we give to our customers (we build and sell furniture), but sometimes such customers can be stores or just regular folks that come directly to us.

For the stores I have to give an invoice that has a NCF number which is a tax related number that increases the cost in 16% but stores require this number which must be unrepeatable. Each company has a “list” of numbers that they can provide their customers. Regular customers (not stores) have no interest in this number, obviously trying to avoid the 16% increase in the price!

So far what I did was create a database of our customers with the basic info of each one. Many of our customers keep buying so this way I just have to place myself in the invoice and select from a list and with a simple vlookup I get the rest of the customer’s information: phone, address and RNC number.

Now… the RNC is the number that tells me if it’s a store or not. Stores must have their registration number (RNC) in order to receive invoices with NCF (boring, I know… I’m gonna get to the point in a sec). Ok, so if I choose my dear customer “Chandoo Enterprises” and this store has RCN, then I automatically need for the invoice to pull form “my list” of government assigned NCF numbers, the next one in line. If in my previous invoice (say invoice 1455) to another store I used NCF number A010010010100000002 (that’s how they look) for Chandoo Enterprises -invoice #1456- I am going to need the next number in line A010010010100000003 and so on. Now, say that my next invoice (1457) is not to a store but to John Doe, for him I don’t want an NCF number to show.

I keep thinking that there’s a very stupid and simple way to do this but I just can’t nail it!! My problem is to get to a formula that will work only when the RNC field has information and therefore avoiding NCF numbers to appear on non-store customers (not so complicated I think) and that it chooses the next NCF number in line, no repeating… this is the part that I have no idea how to do!! Is there a way to solve this without using VBA? VBA is scary!! Hehehe

Okay, that is a big question, but may be we can come up with a small solution for it.

Invoice Numbers in ExcelIf I understand it correct, Michelle is looking for something like this:

So, in order to generate such numbers,

  1. First we will make 2 named ranges – customer_list and ncf_numbers. You know what they mean.
  2. Now, we will enter the customer name in column B, and based on that we will fetch RNC number in column C.
  3. For this, we will use VLOOKUP () formula. The simplest formula looks like this: VLOOKUP(B5,customer_list,4,FALSE)
  4. But, simplest formula also has problems – it doesn’t handle errors and can return 0 when the RNC number field is blank. So we will add some fat to it, mainly on the front side. It now looks like this: =IF(ISERROR(VLOOKUP(B5,customer_list,4,FALSE)),””, VLOOKUP(B5,customer_list,4,FALSE))
  5. In the third column, we will fetch the next available NCF number if the customer has an RNC. For this, we use a simple IF() and COUNTIF() formulas along with INDEX() formula. We write: =IF(OR(C5=””,C5=0),””,INDEX(ncf_numbers,COUNTIF($C$5:C5,”RNC*”))).
  6. Above formula simple fetches the nth NCF number from the named range ncf_numbers if RNC number is not blank.
  7. That is all.  We now have a simple logic to generate invoice numbers that suit tax authority’s whims and fancies.

Download the example workbook:

You can download the excel tutorial workbook and see how you can generate such invoice numbers yourself.

More material if you are getting stuck with formulas

50+ Excel Formulas – Explained in plain English, Excel formula tutorials, Excel array formula examples

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30 Responses to “Rescue oddly shaped data – Battle between Formulas, VBA and Power Query”

  1. MF says:

    Nice use of Power Query! Power Query is simply awesome! But somehow a lot of people are punishing themselves by not using it (not learning it).

    An imperfect 4th approach for consideration... no codes at all...
    Select myrange.
    Go to Special --> Blank
    Delete Cell --> Shift cell left
    90% done... now we just need to move the data of 2nd column to the bottom of 1st column
    Of course... Power Query is the best.
    Cheers,

  2. There is another way but it involves multiple steps:
    Copy the values in column E, move the cursor to F5, Paste Special with Skip Blanks, OK
    Copy the values in column D, move the cursor to F8, Paste Special with Skip Blanks, OK
    And so on.
    This works perfectly, albeit a little clumsily apart from the values in B17 and C16, which can be moved with simple copy and paste

  3. Robson says:

    Power Query Forever! I do not know how I survived for so long without knowing and using this tool, I can not recommend it to my colleagues, but by the way they prefer to suffer to learn.

    My congratulations here from Brazil.

  4. Haz says:

    I rolled my eyes when I saw that data

    Using decimal places is a nice trick to order data, thanks for that

    And tweaking the first formula a bit, you can use OFFSET instead of INDIRECT

    =OFFSET($A$1, MIN(IF(myrange, ROW(myrange)), ROWS(A$1:A1))-1, RIGHT(TEXT(MIN(IF(myrange, ROW(myrange) + COLUMN(myrange)*0.00001), ROWS(A$1:A1)), ".00000"), 5)-1)

    • Michael Connor says:

      Tried the above formula with the downloaded oddly shaped data file and I could not get it to work. I get #value without ctrl+shift+enter, and #ref with ctrl+shift+enter.

      • Haz says:

        Sorry, it was SMALL, not MIN.
        Add with CTRL+SHIFT+ENTER.

        • Michael Connor says:

          Thank you for your formula. Like the indirect formula I tested this one in older versions of EXCEL and it worked without ALTERATION in EXCEL 95. Very impressive.

  5. Bertie Hechter says:

    Too complicated

    Use =Sum to summarize all the sells to the left and Bobs Your Uncle

  6. Michael Connor says:

    I tested this formula in versions of Excel all the way back to Excel 95

    =IF(ISERROR(INDIRECT("R"&SUBSTITUTE(TEXT(SMALL(IF(MyRange"",ROW(MyRange)+COLUMN(MyRange)*0.00001),ROWS(A$1:A9)),"00000.00000"),".","C"),FALSE)),"",(INDIRECT("R"&SUBSTITUTE(TEXT(SMALL(IF(MyRange"",ROW(MyRange)+COLUMN(MyRange)*0.00001),ROWS(A$1:A9)),"00000.00000"),".","C"),FALSE)))

    So there are multiple ways of cleaning up messy data by formulas.

    • Chandoo says:

      Wow.. Excel 95. Who knew people still use that. But as you have shown, Excel has all these beautiful and powerful functions for 23 years. It has data sciency stuff before DS was even a thing.

      • Michael Connor says:

        I had a problem with pasting the formula in the original post.
        Formula should be: =IF(ISERROR(INDIRECT("R"&SUBSTITUTE(TEXT(SMALL(IF(myrange"",ROW(myrange)+COLUMN(myrange)*0.00001),ROWS(A$1:A1)),"00000.00000"),".","C"),FALSE)),"",(INDIRECT("R"&SUBSTITUTE(TEXT(SMALL(IF(myrange"",ROW(myrange)+COLUMN(myrange)*0.00001),ROWS(A$1:A1)),"00000.00000"),".","C"),FALSE)))

        EXCEL even in a 16 bit version, is a very robust and capable program.

  7. Michael Connor says:

    I don't like the VBA code. If you have a blank row in MyRange, the last entry in the range is doubled up in the paste.here range.

    • Chandoo says:

      Not really. The macro is writing one cell at a time from paste.here. You have to clean the range before, which I was too lazy to write. But a line like Range(range("paste.here"), range("paste.here").end(xldown)).clearcontents should do the trick.

      • Michael Connor says:

        Adding Range(range("paste.here"), range("paste.here").end(xldown)).clearcontents fixed the problem.

  8. A Rakesh Patro says:

    for step split column by delimiter i am not getting option of split into rows or columns. Can you help me in this

  9. Marc says:

    Thanks Chandoo for promoting Power Query.

    To simplify further, you can "Unpivot Columns" instead of right click on the newly created column and split it by comma in to rows in step 3 of Power Query.

  10. johan says:

    i used

    =LOOKUP(10000,B5:F5)

    and got the answers. I just plagiarized this formula somewhere and use it, maybe you can explain why it works.
    Regards

    • Chandoo says:

      @Johan... I am not sure if the formula works correctly. When I tested it with the sample data in this post, it showed #N/As in two cells. Essentially, it will only give first value in each row. So if a row has multiple values, then subsequent values are missed. LOOKUP() function goes thru a list and finds the first value that is less than or equal to the input - in this case 10000 in B5:F5.

  11. Ben says:

    I have the need to convert pdf's to excel on occasion and they often come out a mess like this. I have used:

    Cell G2 =COUNT(myrange)
    Cell G3 =IFERROR(IF(G2-1<1,"",G2-1),"") copied down to G100
    Cell H2 =IFERROR(LARGE(myrange,G2),"") copied down to H100

  12. Patrick says:

    Waouw...

    =IFERROR(INDIRECT("R" & SUBSTITUTE(TEXT(SMALL(IF(myrange "", ROW(myrange) + COLUMN(myrange)*0.00001),
    ROWS(A$1:A1)), "00000.00000"), ".", "C"), FALSE), "")

    but CTRL Shift Enter with {} before and after 🙂 😀

  13. Peter B says:

    Another possibility.
    This assumes that you have a row index 'k' to use in the SMALL function and a column index 'h' to identify the columns of 'myRange'.
    If you define 'coord' to refer to
    =k+h/10 [assuming h<10]
    then it will be possible to recover values later based upon location within 'myRange'. The formula 'nb' that identifies non-blanks by coordinates is given by
    = SMALL( IF(myRange"", coord), k )
    Finally, to unpick the pieces
    = INDEX( myRange, INT(nb), 10*MOD(nb, 1) )

  14. Peter B says:

    Whilst I am here and making trouble the PQ solution is also a tad over-complicated. All that is needed is to unpivot the entire table and remove the Attribute column.

    The advanced editor would show
    let
    Source = Excel.CurrentWorkbook(){[Name="myRange"]}[Content],
    #"Unpivoted Columns" = Table.UnpivotOtherColumns(Source, {}, "Attribute", "Value"),
    #"Removed Columns" = Table.RemoveColumns(#"Unpivoted Columns",{"Attribute"})
    in
    #"Removed Columns"

  15. vivian.liu says:

    1.fill the blank cells with 0
    2.the requested column value=sum of those mess number column
    but this can be used in only one column has value

  16. Juan Carlos Barreto says:

    Chandoo

    And if we use the formula SEARCH (100000000, B5: F5)

    JC

  17. Daniel Dion says:

    Another approach with Power Query, it will still work if the number of columns changed:
    let
    Source = Excel.CurrentWorkbook(){[Name="myrange"]}[Content],
    #"Added Custom" = Table.AddColumn(Source, "List", each Record.ToList(_)),
    #"Removed Other Columns" = Table.SelectColumns(#"Added Custom",{"List"}),
    #"Expanded LIst" = Table.ExpandListColumn(#"Removed Other Columns", "List"),
    #"Filtered Rows" = Table.SelectRows(#"Expanded LIst", each ([List] null))
    in
    #"Filtered Rows"

  18. Bob says:

    Nowadays, you can just use TOCOL on Excel 2024, MS 365, and Web Excel. It has a parameter to ignore blanks/errors/both.

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