Change request is a common practice in any project. The changes may involve addition, elimination, or modification of details in a document, deliverable or baseline. With regards to this, discuss the key types of change request expected, with appropriate examples, in a railway track laying project. Requirement: - please start with explanation and elaborate the answer then give heading for the points you will discussion and elaborate with example as much as you can. all heading should have example to support the answer. thankyou