Invalidation of signature by data update

When a form or case book is signed, it is expected that data entry is complete and source verification has been performed . However, later information can result in data entry changes after the form or case book has been signed.

When this happens, InForm application invalidates the previous signature or signatures and updates the signature listings and each form to indicate that the form or case book must be signed again.

Data that has been exported from InForm application by using AutoCode or Central Coding functionality and reimported after coding has special invalidation considerations. Coded data is often designed to be hidden on a form; if the import of coded data invalidates a signature, it might not be possible to see which item caused the invalidation. Therefore, trial designers can specify whether imported data invalidates a signature.