The column Title has default setting as single line text. I would like to set validation as only positive numbers allowed, no decimal.

I've tried with =ISNUMBER(PurchaseQty+0) but I still can key in negative value and decimal.

2 Answers 2




so that makes:

=IF( SIGN( [PurchaseQty] ) >-1 , TRUE , FALSE )

or the same:

= SIGN( [PurchaseQty] ) >-1

Note: SharePoint does type conversions for you,
so [PurchaseQty] can be a Text Column,
but if it does not contain a number representation you get a #Value error

update 1

  • Hi Danny.. The formula works but there is a problem.. We still can enter decimal values.. How to avoid that?
    – Yuges
    Commented Dec 18, 2015 at 8:50
  • Would there be a function that converts a decimal to an integer so you can check entered value===integer value?.. Yes.. you would have to scan that whole list of functions and read what they do. If I present you the solution, you learn nothing today. Commented Dec 18, 2015 at 9:16
  • I Used below command.. It works in excel but not working in SharePoint. Can you please verify. =IF(INT(SIGN(PurchaseQty))>-1,TRUE,FALSE)
    – Yuges
    Commented Dec 21, 2015 at 9:19
  • SIGN returns -1,0,1 .. so the INT of that is.... You have to compare the Column itself with its INT value. INT(PurchaseQty)=PurchaseQty Commented Dec 21, 2015 at 9:30
  • I used below and still got error. =IF(SIGN(TRUNC(PurchaseQty))>-1,TRUE,FALSE) @DannyEngelman
    – Yuges
    Commented Dec 21, 2015 at 9:42

You have to apply jslink on List "Title" Field and using JQUERY You can check the number is integer or not.

$(document).ready(function () {
  //called when key is pressed in textbox
  $("#quantity").keypress(function (e) {
     //if the letter is not digit then display error and don't type anything
     if (e.which != 8 && e.which != 0 && (e.which < 48 || e.which > 57)) {
        //display error message
        $("#errmsg").html("Digits Only").show().fadeOut("slow");
               return false;

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