When ever a user changes a particular field in a SharePoint List, Can I force the user to enter another field?

For example, I have got two fields, lets say A and B. When ever a user changes / update the field A can I force the user to update B as well ? (If user changes B no need to force the user to change A).

Looking for some inputs!! Many thanks ...

  • Are you able to use javascript/jQuery? Nov 16, 2011 at 12:31
  • I did not try with that, though thanks for that, will see how can I do it ...
    – Jithu
    Nov 16, 2011 at 12:49

1 Answer 1


Not possible Out-of-box. You can use a javascript to clear the B field. If you need some logic or validation, you have to develop custom fields.

  • Most of the time JavaScript will work fine. However, it is worth noting that it is not bulletproof. The only bulletproof method is to write an Event Receiver.
    – Kit Menke
    Nov 16, 2011 at 15:41
  • With the question, I understand that he wants user to update field B when field A is updated(by user). If so, event receiver cannot help as it will not change the UI at the time of field change. The only option is to develop custom field control Nov 16, 2011 at 16:01
  • Yes, good point about the UI. The event receiver could only enforce the data.
    – Kit Menke
    Nov 16, 2011 at 22:26
  • thank you Amit and Kit for your help on this issue !! however I would like to add one more note that the list is of type Datasheet, here also cn I use JavaScript?
    – Jithu
    Nov 17, 2011 at 4:16

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