I have 2 combo-boxes inside a canvas app form named Approver1 & Approver2 >> where both fields represents a SharePoint "People/Group" field

Now I want to make sure that the Approver1 will be different than Approver2.

And I need to prevent submitting the form if the 2 combo boxes have the same user/value + to show a message under each field if the 2 combo boxes have the same value?

Is this possible? and how?

  • Is this a standalone canvas app or customized list form? Combo boxes are single selection or multiple selection? Commented Jun 13, 2023 at 2:33
  • In order to better help you solve the problem, can you provide some more detailed description?
    – Xyza_MSFT
    Commented Jun 13, 2023 at 8:00
  • @GaneshSanap thanks for the reply.. this is a standalone cavas app + comboboxes are single selection thanks Commented Jun 13, 2023 at 10:43
  • 1
    check my answer given below Commented Jun 13, 2023 at 11:12

1 Answer 1


For single selection combo box controls in Power Apps, you can compare values using their properties via .Selected property.

For example:

For combo box with person or group column, you can compare values based on the selected user emails.

You can set add a label control in your app and set it's Text property to:

If(ComboBox1.Selected.Email = ComboBox2.Selected.Email, "Same", "Different")


  1. When same person selected:

    enter image description here

  2. When different person selected:

    enter image description here

You can use similar comparison for your formulas in other places.

  1. You can set Visible property of label control which shows error message to:
ComboBox1.Selected.Email = ComboBox2.Selected.Email
  1. You can use formula like below in OnSelect property button control which saves form in list:
    ComboBox1.Selected.Email = ComboBox2.Selected.Email,
    Notify("Please select different Approvers.", NotificationType.Error),

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