**Definition:**

A **Requirements Verification Traceability Matrix (RVTM)** is a tool used in project management and systems engineering to ensure that all requirements defined for a project or system are tested and validated appropriately. The RVTM provides a way to trace each requirement through the different stages of development, from initial conception through to final testing, to confirm that each requirement has been met and verified.

The matrix typically includes:

– **Requirement ID:** A unique identifier for each requirement.
– **Requirement Description:** A detailed description of the requirement.
– **Verification Method:** The method or approach used to verify that the requirement is met (e.g., testing, inspection, analysis).
– **Verification Status:** Current status of verification (e.g., not started, in progress, completed).
– **Test Cases/Criteria:** Specific test cases or criteria used to verify the requirement.
– **Comments:** Any additional notes or observations.

**Example:**

Consider a project for developing a new software application. The RVTM might look something like this:

In this example, each requirement is traced through its verification method and status, ensuring that all requirements are addressed and validated before the project is considered complete.

When should an RTM be created?

An RTM, or Requirements Traceability Matrix, is a critical tool in project management and software development. It should be created when:

1. **Project Planning:** As part of the initial planning and requirements gathering phase. This ensures that all requirements are documented and traceable throughout the project lifecycle.

2. **Requirements Gathering:** After initial requirements are collected and documented, an RTM helps track these requirements through design, development, testing, and deployment phases.

3. **Design Phase:** Once the design phase begins, the RTM should be updated to ensure that design elements align with the requirements.

4. **Development Phase:** During or after development starts, the RTM is used to confirm that each requirement is being addressed by the development work.

5. **Testing Phase:** The RTM becomes crucial for the testing phase to verify that all requirements are covered by test cases and to ensure that each requirement has been tested.

6. **Change Management:** If there are changes to requirements, the RTM should be updated to reflect these changes and track how they impact other project elements.

7. **Validation and Verification:** Before final validation, an RTM ensures that all requirements have been met and properly tested, and it provides a clear record for verification purposes.

In essence, an RTM should be created and maintained throughout the project to provide visibility, ensure alignment, and support quality assurance.