What is the primary purpose of the invocations found at the beginning of Chapter 1 of the Sai Satcharitra?

According to Chapter 1 of the Sai Satcharitra, the primary purpose of the opening invocations, or Mangalacharan, is to ensure the obstacle-free completion of the work being undertaken. The text explicitly states, "At the start of any task, for its obstacle-free completion and to obtain the grace of the desired deity, the wise perform auspicious invocations." The author offers salutations to deities like Lord Ganesha, who is described as holding a bright axe to destroy the obstacles of devotees. This traditional etiquette, as mentioned in the chapter, is adopted for the removal of all obstacles and the successful fulfillment of the desired goal, which in this case is the writing of the sacred book.