Thank you very much for your answers. Now, more specifically:
Decedent had 3 other siblings. He dies year X without a will. His own parents' estate hasn't been distributed because decedent is in dispute with one sibling. When he dies, the other 3 siblings reach an agreement and divide equally the land from their parents' estate. Decedent has one child (alive) and one grandson (from a deceased child) who, according to local estate law, will each get 1/8 of the decedent's grandparents estate. However, it isn't until the end of year X+2 that both of the decedent's heirs get to know that the estate has been resolved in their favor. How can they reconcile the fact that they can no longer make the reporting on year X? Also, in the local country, appraisal is done by the government once a year whenever they want (there is no such thing as "date of death valuation"), would the value on year X be good enough?
