# Activation of a MaBiS metering point for the daily balancing area aggregate time series from the ÜNB to NB — ÜNB view The ÜNB activates a MaBiS-ZP of a BG-SZR (category C) and sends the corresponding information to the NB. ## Process flow from the perspective of the ÜNB \nSystem diagram: Aktivierung eines MaBiS-Zählpunkts für die tägliche Bilanzierungsgebietssummenzeitreihe vom ÜNB an NB — view of ÜNB\n\n\nCustomer backend system\n\nMACO APP · ÜNB\n\nMarket partner\n\n\n\n1. Aktivierung eines\nMaBiS-ZP für die BG-SZR\n(Kategorie C)\n\nNB\n\nAS4\n55062\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\n"} gesamt={"\nSequence diagram: Aktivierung eines MaBiS-Zählpunkts für die tägliche Bilanzierungsgebietssummenzeitreihe vom ÜNB an NB — view of ÜNB\n\n\nBackend (customer)\n\n\nMACO APP · ÜNB\n\n\nNB\n\n\n1. Aktivierung eines MaBiS-ZP für die BG-SZR (Ka…\nAS4 · PI 55062\n\nUpdate transaction\nUpdate process data\n"} titel="ÜNB" /> ## Process steps ### Activation of a MaBiS-ZP for the BG-SZR (category C)
**Check identifiers** - [55062](/en/schnittstellen/202610/pruefi/UTILMD/PI_55062) — Activation of ZP · AS4
**Flow**
  1. Message to **NB** · AS4
  2. **Write endpoint** - Transaction updated — `AKTUALISIEREN_PROZESSDATEN` Updates the existing transaction in the backend once the message has been created.
## Process information Wording of the consolidated version, profile ch. 15.2.1, pp. 209–210.
  1. ### Preconditions The ÜNB has been informed by the NB responsible for the BG about the assignment of the first market location with ÜNB aggregation responsibility, for whose assigned combination of ZRT, voltage level and BG no MaBiS-ZP for the BG-SZR (category C) is activated yet.
  2. ### Results The NB can assign the BG-SZR (category C) to a MaBiS-ZP.
  3. ### First message The party involved on this page sends this itself: “Activation of a MaBiS-ZP for the BG-SZR (category C)” to **NB** (step 1).
  4. ### Objective The ÜNB has activated the MaBiS-ZP for the corresponding BG-SZR (category C) at 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/202610/NB/MaBiS-aktivierung-eines-mabis-zaehlpunkts-fuer-die-taegliche-bilanzierungsgebietssummenzeitreihe-vom-uenb-an-nb) — 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 source does not yet name the event that triggers these steps. 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)