What is the primary purpose of the invocations that begin Chapter 1 of Shri Sai Satcharitra?

According to Chapter 1 of Shri Sai Satcharitra, the primary purpose of the auspicious invocations, or 'Mangalacharan', is to ensure the obstacle-free completion of the task of writing the book. The author performs these salutations to various deities, beginning with Lord Ganesha, for the removal of all obstacles and the fulfillment of the desired goal. This traditional etiquette is adopted to obtain the grace of the desired deities and attain auspiciousness. The text explicitly states that the reason for this auspicious beginning is to remove hindrances, which is why the author first bows to Ganapati, the destroyer of obstacles for his devotees.