Let's understand the concept of Requirement Traceability Matrix through a Guru99 banking project. On the basis of Business Requirement Document (BRD) and Technical Requirement Document (TRD), testers start writing test cases.
Step 1: Our Test Case is
"Verify Login, when correct ID and Password is entered, it should login successfully"
Step 2: Identify the Technical Requirement that this test case is verifying. For our test case, the technical requirement is T94 is being verified.
Step 3: Note this Technical Requirement (T94) in the Test Case.
Step 4: Identify the Business Requirement for which this TR (Technical Requirement-T94) is defined
Step 5: Note the BR (Business Requirement) in Test Case
Step 6: Do above for all Test Cases. Later Extract the First 3 Columns from your Test Suite. RTM is Ready!