A PRINCE2 requirement is that all projects has continued business justification. This means that there is a justifiable reason to start it, and that the justification remains valid throughout the project and that it is documented and approved adequatly.
This justification is documented in the business case. Organisations that lack detail and depth in their business case may find that projects are undertaken that deliver little or no business benefit.
Poor alignment with corporate strategies can also results in many projects failing, being duplicated or inconsistent results.
Compulsory projects (e.g. if new legislation requires compliance) require justification as there may be several options that yield different costs, benefits and risks.
Justification must remain valid, however, it can change. It is important that the justification remains consistent. If the project no longer becomes justifiable, it should be stopped. This is posititve in these circumstances because it frees up resources being spent on a project for other endevours.
