# How a form change affects source verification

After source verification is complete, some updates cause a form or item to be un-verified.

- The value of a data item on a form changes.
- A form or item comment is entered.
  - Form comments un-verify every item on the form.
  - An item comment un-verifies just that item.
- Repeating forms or itemset rows are deleted or undeleted.
  - The form or the itemset row is un-verified.

When the verification status changes, the InForm application highlights the form or item so that you can re-verify it.

- The source verification status of the form changes to a status that indicates that source verification is incomplete.
- You can see this change in the Source Verification Listing page.

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