# Frequently Asked Questions

# How does the requirements traceability matrix (RTM) work? How do I complete my RTM?

The requirements traceability matrix is created based on relationships between the following configuration items:

- Requirements
- Specifications
- Test Cases
- Test Executions

By default, you will see the following columns and their relations to the configuration items that you may be familiar with:

|     |     |
| --- | --- |
| Column | Description of applicable configuration items |
| Use Case | Requirements of type [use case](https://support.ketryx.com/hc/en-us/articles/21762354592653-What-is-a-use-case) |
| Input | Child requirements of the use case |
| Output | Specifications that [fulfill a requirement](https://support.ketryx.com/hc/en-us/articles/21784414749837-What-is-the-relation-between-requirements-and-specifications-How-should-I-differentiate-and-manage-requirements-and-specifications) |
| Verification | Test cases that test a specification and have been executed through a test execution |
| Validation | Test cases that test a requirement and have been executed through a test execution |

**Note:** The [requirements traceability matrix](https://docs.ketryx.com/reference/traceability-configuration) is completely configurable to meet the needs of your organization.

If you receive an error message for your traceability matrix, refer to MAN-07 Traceability for [fixing traceability errors](https://docs.ketryx.com/manuals/man-07-traceability#id-3.6.-fixing-traceability-errors).