# Termination of the subscription to the balancing area clearing list from the NB to the ÜNB — ÜNB view The NB terminates the subscription to the BG-CL with the ÜNB. ## Process flow from the perspective of the ÜNB \nSystem diagram: Beendigung des Abonnements für die Bilanzierungsgebietsclearingliste vom NB an ÜNB — view of ÜNB\n\n\nCustomer backend system\n\nMACO APP · ÜNB\n\nMarket partner\n\n\n\n1. Beendigung Abonnement\n\nNB\n\nAS4\n17206\n\nCreate transaction\n\n\nCreate process data\n\nAPI\n"} gesamt={"\nSequence diagram: Beendigung des Abonnements für die Bilanzierungsgebietsclearingliste vom NB an ÜNB — view of ÜNB\n\n\nBackend (customer)\n\n\nMACO APP · ÜNB\n\n\nNB\n\n\n1. Beendigung Abonnement\nAS4 · PI 17206\n\nCreate transaction\nCreate process data\n"} titel="ÜNB" /> ## Process steps ### Termination of subscription
**Check identifiers** - [17206](/en/schnittstellen/202604/pruefi/ORDERS/PI_17206) — Request for balancing area clearing list · AS4
**Flow**
  1. Message from **NB** · AS4
  2. **Write endpoint** - Transaction created — `ERSTELLEN_PROZESSDATEN` Creates a new transaction in the backend with the data of the incoming message.
## Process information Wording of the consolidated version, profile ch. 9.5.1, p. 110.
  1. ### Preconditions For the BG-CL, a subscription by the NB exists at the ÜNB.
  2. ### First message **NB** sends “End of subscription” (step 1). From here on, it is the turn of the party involved on this page.
  3. ### Objective The ÜNB has terminated the subscription of the BG-CL for the NB.
## Other views of the process The same process through the eyes of the other parties involved: the same steps, each read from their point of view. - [View NB](/en/prozessdoku/202604/NB/MaBiS-beendigung-des-abonnements-fuer-die-bilanzierungsgebietsclearingliste-vom-nb-an-uenb) — NB *The steps are the **possible** messages of this process, not a sequence — the source lists neither conditions nor alternatives. The small box on the step names the own view on the left: with **←** it receives, with **→** it sends. Collapsed steps run between other market partners.* The connector table lists no write call for these steps. Derived from the process flow: the process begins for the own role with their message, so the transaction is created. Applies to: [1](#schritt-1) For this market role there is no write catalog; the step therefore shows only the command of the write call, without address and without button. Applies to: [1](#schritt-1)