IBM Exam C9530-272 Topic 1 Question 4 Discussion

A solution developer implemented a message flow for a book store company which receives an XML input message. The input message is formed according to an XML schema supplied by the client and used by several other applications owned by the company. The input node uses XMLNSC parser to parse the input message. The image below depicts a sample XML input message. According to business needs, the bookDetails elements and all of its children are not referenced by the code. Performance test for the flow showed a significant time spent in message parsing time especially for large messages.

What should the solution developer do to enhance the message parsing time ?