What is the primary purpose of the invocations (Mangalacharan) at the beginning of Chapter 1 of the Sai Satcharitra?

The primary purpose of the auspicious invocations at the start of the Sai Satcharitra is to ensure the obstacle-free completion of the work. As explained in Chapter 1, the wise perform these invocations to obtain the grace of the desired deity. The author states the reason is the removal of all obstacles and the purpose is the fulfillment of the desired goal. By offering salutations to deities like Lord Ganesha, the author follows a traditional etiquette for attaining auspiciousness and seeks divine assistance to successfully narrate the life of Sai Baba for all devotees.