A daily log may be used to record informal issues, required actions or significant events not captured by other PRINCE2 registers or logs. It can act as the project diary for the project manager. It can also be used as a repository for issues and risks during the starting up a project process if the other registers have not been set up.
There may be more than one daily log as team managers may elect to have one for their work packages. This is separate from the project manager’s daily log. Entries are made when the project manager or team manager feels it is appropriate to log some event. Often entries are based on thoughts, conversations and observations.
PRINCE2 does not define the composition, format and presentation or quality criteria for this product. The template provided here is a suggestion of the format and structure you could choose to use.