Jawaban:

. If the traditional law dictates that the rightful successor must be the eldest child, the king's preference for Purba Sari may conflict with the established rules and laws. This could potentially cause issues in terms of succession and the preservation of traditional customs and practices. On the other hand, the king may have a valid reason for his preference, such as Purba Sari being more qualified or capable of fulfilling the responsibilities of the position. Ultimately, the situation would require more information to fully understand and assess.