What is the primary purpose of the invocations at the beginning of Shri Sai Satcharitra, as detailed in Chapter 1?

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 at hand, which is the writing of this sacred book. The text explicitly states that this traditional practice is performed to remove all hindrances and obtain the grace of the desired deities. The author offers salutations to Ganapati, Saraswati, and others so that the desired goal may be fulfilled. The chapter emphasizes that this auspicious beginning is crucial for success, with Ganesha being invoked specifically to destroy the obstacles faced by devotees.