IHTM05091 | Amendments and changes in circumstances following confirmation (Scotland): what happens if there are amendments to the estate declared for confirmation?

From HM Revenue & Customs · Inheritance Tax Manual

If the Personal Representatives discover that an asset has not been included in the original inventory (IHTM05025) and in the confirmation, (IHTM05104) they can obtain title to it by obtaining:

an Eik to the confirmation (IHTM05092), or
confirmation ad omissa (IHTM05105)