This document covers:

1. What are ECVNs and MVRNs?

ECVNA Authorisation applications must specify:

MVRNA Authorisation applications must specify:

3. How do I submit Energy Contract Volume Notifications?

3.1 Submitting a New ECVN

3.2 Submitting an Overwrite Notification

3.3 Submitting an Additive Notification

3.4 Submitting an Overwrite Notification by a New ECVNA

3.5 Submitting an Additive Notification by a New ECVNA

3.6 Notification Submission Summary

3.7 Cancelling Notifications

3.8 Nullification

3.9 ECVNA Authorisation Change

4. How do I submit Metered Volume Reallocation Notifications?

7. Data Flows

8. Sign Conventions

Further Information