What is the purpose of the invocations at the beginning of the Sai Satcharitra as described in Chapter 1?

According to Chapter 1 of the Sai Satcharitra, the purpose of the opening invocations, known as Mangalacharan, is to ensure the obstacle-free completion of the task of writing the book. The text states that at the start of any task, the wise perform these auspicious invocations to remove all obstacles and obtain the grace of the desired deity. The author offers salutations to Lord Ganesha, Goddess Saraswati, and others with the specific purpose of fulfilling the desired goal, which is to successfully narrate the life of Sai Baba. This traditional etiquette is adopted for attaining auspiciousness.