About the invalidation level of a signature

The InForm application invalidates a signature if any data items in the form change after signoff.

In cases in which the data items that changed are marked as hidden from a signer, you can prevent an invalidation by using one of the following options in the Invalidation Level drop-down list:

User―The signature is invalidated only if the signer from whom the changes were hidden can view the data item that changed.
Group―The signature is invalidated only if at least one signer in the signature group can view the data item that changed.