# Obligation gMSB — View MSBA The NB obliges the gMSB to take over the individual metering location and any assigned market location. The gMSB decides whether it wishes to carry out a device replacement and/or a device takeover and, once carried out, confirms the takeover of the metering point operation to the NB. The use cases “[Device replacement](/en/prozessdoku/202604/MSB--MSBA/WiM-Teil1-geraetewechsel)” and “[Device takeover](/en/prozessdoku/202604/MSB--MSBA/WiM-Teil1-geraeteuebernahme)” can be triggered by the gMSB in parallel or one after the other. The NB subsequently informs the wMSB about the reassignment. ## Process flow from the perspective of the MSB (MSBA) \nSystem diagram: Verpflichtung gMSB — view of MSB\n\n\nCustomer backend system\n\nMACO APP · MSB (entsprich…\n\nMarket partner\n\n\n\n4. Information über\nNeuzuordnung\n\nNB\n\nAS4\n21018\n\nCreate transaction\n\n\nCreate process data\n\nAPI\n"} gesamt={"\nSequence diagram: Verpflichtung gMSB — view of MSB\n\n\nBackend (customer)\n\n\nMACO APP · MSB (entsprich…\n\n\nMSB (entspricht gMSB am O…\n\n\nNB\n\n\n3. Bestätigung der Übernahme des Messstellenbetr…\nAS4 · PI 21010\n\n4. Information über Neuzuordnung\nAS4 · PI 21018\n\nCreate transaction\nCreate process data\n"} titel="MSBA" /> ## Process steps ### Confirmation of the takeover of metering point operation This step runs between other market partners and is not relevant for this view.
**Check identifiers** - [21010](/en/schnittstellen/202604/pruefi/IFTSTA/PI_21010) — Status message · AS4
### Information on reassignment
**Check identifiers** - [21018](/en/schnittstellen/202604/pruefi/IFTSTA/PI_21018) — Status message · AS4
**Flow**
  1. Message from **NB** · AS4
  2. **Write endpoint** - Transaction created — [Create process data](/en/api/202604/backend-schreiben-msb/createprocessdata#prozessdaten-erstellen) `POST /createProcessData` Try it out Creates a new transaction in the backend with the data of the incoming message.
## Process information Wording of the consolidated version, profile ch. 2.5.1, pp. 35–36.
  1. ### Preconditions - The maximum term for the continued commitment of the deregistering wMSB within the use case „[End of metering point operation](/en/prozessdoku/202604/MSB--MSBA/WiM-Teil1-ende-messstellenbetrieb)“ has expired and there is no new MSB for the metering location or market location or - as part of the use case „[End of metering point operation](/en/prozessdoku/202604/MSB--MSBA/WiM-Teil1-ende-messstellenbetrieb)“, the NB seeks an assignment of the gMSB.
  2. ### Results - The NB can distribute the master data changed as a result at the metering location and, where applicable, the market location of a location bundle to the authorised parties. - The NB sends the calculation formula to the gMSB. - If the transmission of values to ESA is carried out, MSBA ends the transmission of values to ESA. - If MSBA has to end a configuration ordered by a NB or LF, - and the MSBA is the MSB of the directly affected location of the configuration to be ended, the MSBA carries out the use case „[Ending a configuration by the MSB](/en/prozessdoku/202604/LF/GPKE-Teil3-beendigung-einer-konfiguration-vom-msb)“ (GPKE part 3). - and, in the case that the MSBA is a „further MSB“ of the configuration to be ended, the MSBA carries out the use case „Order placement for ending a configuration to MSB“ (GPKE part 3).
  3. ### Further requirements If a wMSB registers the metering point operation before the „Takeover of the metering point operation“ is confirmed in the use case „Commitment gMSB“, the use case „[Start of metering point operation](/en/prozessdoku/202604/MSB--MSBA/WiM-Teil1-beginn-messstellenbetrieb)“ must be carried out in this case and the use case „Commitment gMSB“ must be aborted.
  4. ### Trigger **Runs beforehand:** [End of metering point operation](/en/prozessdoku/202604/MSB--MSBA/WiM-Teil1-ende-messstellenbetrieb) — these processes name the one shown here in their result.
  5. ### First message **NB** sends “Information on the reassignment” (step 4). From here on, it is the turn of the party involved on this page.
  6. ### Objective The gMSB is assigned to a metering location and, if applicable, to the market location (for determining the energy quantities of the market location) within a location bundle.
## 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 GMSB](/en/prozessdoku/202604/MSB--GMSB/WiM-Teil1-verpflichtung-gmsb) — default metering point operator · market role MSB - [View NB](/en/prozessdoku/202604/NB/WiM-Teil1-verpflichtung-gmsb) — 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 numbers are those of the source; where one is missing, it is missing there.* 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: [4](#schritt-4)