Why does Chapter 1 of the Sai Satcharitra begin with invocations to various deities?

Chapter 1 of the Sai Satcharitra, titled 'Mangalacharan', begins with auspicious invocations as a traditional practice to ensure the obstacle-free completion of the work. As the text explains, the wise perform these salutations at the start of any task to remove all obstacles and fulfill the desired goal. The chapter offers salutations to Lord Ganesha, the destroyer of obstacles, Goddess Saraswati for literary success, the Guru, and other deities. This custom is adopted for attaining auspiciousness and obtaining the grace of the desired deities for the successful writing of the book.