# Start of metering point operation — NB view The process describes the interactions between the market participants in the case where a single metering location is to be assigned to the registering MSB for carrying out metering point operation. This applies in particular when - it is the initial commissioning or the recommissioning of an individual metering location, - the metering point operation for this metering location is to be assigned to a wMSB for the first time or - the individual metering location is to be assigned to a MSB other than the previous one. ## Process flow from the perspective of the NB \nSystem diagram: Beginn Messstellenbetrieb — view of NB\n\n\nCustomer backend system\n\nMACO APP · NB\n\nMarket partner\n\n\n\n1. Anmeldung\n\nMSBN\n\nAS4\n55042\n\nCreate transaction\n\n\nCreate process data\n\nAPI\n\nLoad data for the check\n\n\n3 read APIs called\n\nAPI\nlisted at the step\n\nEBD check: E_0201\nAnmeldung\nMessstellenbetrieb prüfen\n\n\nTrigger follow-up process:\n21007, 55043, 55044\n\n\nTriggered by incoming\nmessage: 55042\n\n\nLoad data for processing\n\n\nMesslokation lesen\n\nAPI\n\n2. Antwort auf Anmeldung\n\n\nMSBN\n\nAS4\n55043, 55044\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\n\nTriggered by incoming\nmessage: 55042\n\n\n3. Information über\nvorläufige\nAnmeldebestätigung\n\n\nMSBA\n\nAS4\n21007\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\n\nTriggered by incoming\nmessage: 55042\n\n\n4. Information über\nvorläufige\nAnmeldebestätigung\n\n\nLF\n\nAS4\n21007\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\n\n7. Mitteilung über\nGesamtvorgang\n\n\nMSBN\n\nAS4\n21009, 21010\n\nAPERAK check: Z10, Z16,\nZ17, Z18\n\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\n\n8. Antwort auf Mitteilung\nüber Gesamtvorgang\n\n\nMSBN\n\nAS4\n21011, 21012\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\n\n14. Information über\nScheitern der Zuordnung\n\n\nMSBA\n\nAS4\n21011\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\n\n15. Information über\nScheitern der Zuordnung\n\n\nLF\n\nAS4\n21011\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\n\n16. Mitteilung über das\nScheitern des\nGesamtvorgangs\n\n\nMSBN\n\nAS4\n21013, 21013\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\n\n17. Information über\nScheitern der Zuordnung\n\n\nMSBA\n\nAS4\n21013\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\n\n18. Information über\nScheitern der Zuordnung\n\n\nLF\n\nAS4\n21013\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\n"} gesamt={"\nSequence diagram: Beginn Messstellenbetrieb — view of NB\n\n\nBackend (customer)\n\n\nMACO APP · NB\n\n\nMSBN\n\n\nMSBA\n\n\nLF\n\n\n1. Anmeldung\nAS4 · PI 55042\n\nCreate transaction\nCreate process data\n\n2. Antwort auf Anmeldung\nAS4 · PI 55043, 55044 · E_0201\nE_0201 — Anmeldung Messstellenbetrieb prüfen\n\nUpdate transaction\nUpdate process data\n\n3. Information über vorläufige Anmeldebestätigung\nAS4 · PI 21007\n\nUpdate transaction\nUpdate process data\n\n4. Information über vorläufige Anmeldebestätigung\nAS4 · PI 21007\n\nUpdate transaction\nUpdate process data\n\n7. Mitteilung über Gesamtvorgang\nAS4 · PI 21009, 21010\n\nUpdate transaction\nUpdate process data\n\n8. Antwort auf Mitteilung über Gesamtvorgang\nAS4 · PI 21011, 21012 · E_0232\nE_0232 — Mitteilung über Gesamtvorgang prüfen\n\nUpdate transaction\nUpdate process data\n\n14. Information über Scheitern der Zuordnung\nAS4 · PI 21011 · E_0232\nE_0232 — Mitteilung über Gesamtvorgang prüfen\n\nUpdate transaction\nUpdate process data\n\n15. Information über Scheitern der Zuordnung\nAS4 · PI 21011 · E_0232\nE_0232 — Mitteilung über Gesamtvorgang prüfen\n\nUpdate transaction\nUpdate process data\n\n16. Mitteilung über das Scheitern des Gesamtvorga…\nAS4 · PI 21013, 21013\n\nUpdate transaction\nUpdate process data\n\n17. Information über Scheitern der Zuordnung\nAS4 · PI 21013\n\nUpdate transaction\nUpdate process data\n\n18. Information über Scheitern der Zuordnung\nAS4 · PI 21013\n\nUpdate transaction\nUpdate process data\n"} titel="NB" /> ## Process steps ### Registration
**Check identifiers** - [55042](/en/schnittstellen/202610/pruefi/UTILMD/PI_55042) — Registration MSB · AS4
**Flow**
  1. Message from **MSBN** · AS4
  2. **Write endpoint** - Transaction created — [Create process data](/en/api/202610/backend-schreiben-nb/createprocessdata#prozessdaten-erstellen) `POST /createProcessData` Try it out Creates a new transaction in the backend with the data of the incoming message.
  3. **Load data for the check** - [Read market location](/en/api/202610/backend-lesen/getmarketlocationbasic#marktlokation-lesen) `GET /getMarketLocationBasic` Try it - [Read metering location](/en/api/202610/backend-lesen/getmeterlocationbasic#messlokation-lesen) `GET /getMeterLocationBasic` Try it - [Read metering point operation contract](/en/api/202610/backend-lesen/getmeasuringpointoperationcontractbasic#messstellenbetriebsvertrag-lesen) `GET /getMeasuringPointOperationContractBasic` Try it
  4. **Decision tree** - `55042` → [E_0201](/en/referenz/202610/ebd/E_0201) — Check registration of metering point operation
  5. **Trigger follow-up process** - [21007](/en/schnittstellen/202610/pruefi/IFTSTA/PI_21007) — Status message - [55043](/en/schnittstellen/202610/pruefi/UTILMD/PI_55043) — Confirmation registration MSB - [55044](/en/schnittstellen/202610/pruefi/UTILMD/PI_55044) — Rejection registration MSB After processing, the MACO APP starts the follow-up process itself; which of them runs depends on the result of the processing.
### Response to registration
**Check identifiers** - [55043](/en/schnittstellen/202610/pruefi/UTILMD/PI_55043) — Confirmation registration MSB · AS4 - [55044](/en/schnittstellen/202610/pruefi/UTILMD/PI_55044) — Rejection registration MSB · AS4
**Flow**
  1. **Triggered by incoming message** - [55042](/en/schnittstellen/202610/pruefi/UTILMD/PI_55042) — Registration MSB The MACO APP sends this message itself, as a follow-up process after this incoming message.
  2. **Load data for processing** - [Read metering location](/en/api/202610/backend-lesen/getmeterlocationbasic#messlokation-lesen) `GET /getMeterLocationBasic` Try it
  3. Message to **MSBN** · AS4
    **Response per decision tree** - `55043`, `55044` → [E_0201](/en/referenz/202610/ebd/E_0201) · Check registration of metering point operation
  4. **Write endpoint** - Transaction updated — [Update process data](/en/api/202610/backend-schreiben-nb/updateprocessdata#prozessdaten-aktualiseren) `POST /updateProcessData` Try it out Updates the existing transaction in the backend once the message has been created.
### Information about preliminary registration confirmation
**Check identifiers** - [21007](/en/schnittstellen/202610/pruefi/IFTSTA/PI_21007) — Status message · AS4
**Flow**
  1. **Triggered by incoming message** - [55042](/en/schnittstellen/202610/pruefi/UTILMD/PI_55042) — Registration MSB The MACO APP sends this message itself, as a follow-up process after this incoming message.
  2. Message to **MSBA** · AS4
  3. **Write endpoint** - Transaction updated — [Update process data](/en/api/202610/backend-schreiben-nb/updateprocessdata#prozessdaten-aktualiseren) `POST /updateProcessData` Try it out Updates the existing transaction in the backend once the message has been created.
### Information about preliminary registration confirmation
**Check identifiers** - [21007](/en/schnittstellen/202610/pruefi/IFTSTA/PI_21007) — Status message · AS4
**Flow**
  1. **Triggered by incoming message** - [55042](/en/schnittstellen/202610/pruefi/UTILMD/PI_55042) — Registration MSB The MACO APP sends this message itself, as a follow-up process after this incoming message.
  2. Message to **LF** · AS4
  3. **Write endpoint** - Transaction updated — [Update process data](/en/api/202610/backend-schreiben-nb/updateprocessdata#prozessdaten-aktualiseren) `POST /updateProcessData` Try it out Updates the existing transaction in the backend once the message has been created.
### Notification of the overall transaction
**Check identifiers** - [21009](/en/schnittstellen/202610/pruefi/IFTSTA/PI_21009) — Status message · AS4 - [21010](/en/schnittstellen/202610/pruefi/IFTSTA/PI_21010) — Status message · AS4
**Flow**
  1. Message from **MSBN** · AS4
  2. **APERAK checks** - `21009`, `21010` → `Z10` - `21009`, `21010` → `Z16` - `21009`, `21010` → `Z17` - `21009`, `21010` → `Z18`
  3. **Write endpoint** - Transaction updated — [Update process data](/en/api/202610/backend-schreiben-nb/updateprocessdata#prozessdaten-aktualiseren) `POST /updateProcessData` Try it out Updates the existing transaction in the backend with the data of the incoming message.
### Response to notification of the overall transaction
**Check identifiers** - [21011](/en/schnittstellen/202610/pruefi/IFTSTA/PI_21011) — Status message · AS4 - [21012](/en/schnittstellen/202610/pruefi/IFTSTA/PI_21012) — Status message · AS4
**Flow**
  1. Message to **MSBN** · AS4
    **Response per decision tree** - `21011` → [E_0232](/en/referenz/202610/ebd/E_0232) · Check notification on the overall transaction
  2. **Write endpoint** - Transaction updated — [Update process data](/en/api/202610/backend-schreiben-nb/updateprocessdata#prozessdaten-aktualiseren) `POST /updateProcessData` Try it out Updates the existing transaction in the backend once the message has been created.
### Information on failure of the assignment
**Check identifiers** - [21011](/en/schnittstellen/202610/pruefi/IFTSTA/PI_21011) — Status message · AS4
**Flow**
  1. Message to **MSBA** · AS4
    **Response per decision tree** - `21011` → [E_0232](/en/referenz/202610/ebd/E_0232) · Check notification on the overall transaction
  2. **Write endpoint** - Transaction updated — [Update process data](/en/api/202610/backend-schreiben-nb/updateprocessdata#prozessdaten-aktualiseren) `POST /updateProcessData` Try it out Updates the existing transaction in the backend once the message has been created.
### Information on failure of the assignment
**Check identifiers** - [21011](/en/schnittstellen/202610/pruefi/IFTSTA/PI_21011) — Status message · AS4
**Flow**
  1. Message to **LF** · AS4
    **Response per decision tree** - `21011` → [E_0232](/en/referenz/202610/ebd/E_0232) · Check notification on the overall transaction
  2. **Write endpoint** - Transaction updated — [Update process data](/en/api/202610/backend-schreiben-nb/updateprocessdata#prozessdaten-aktualiseren) `POST /updateProcessData` Try it out Updates the existing transaction in the backend once the message has been created.
### Notification of the failure of the overall transaction
**Check identifiers** - [21013](/en/schnittstellen/202610/pruefi/IFTSTA/PI_21013) — Status message · AS4
**Flow**
  1. Message to **MSBN** · AS4
  2. **Write endpoint** - Transaction updated — [Update process data](/en/api/202610/backend-schreiben-nb/updateprocessdata#prozessdaten-aktualiseren) `POST /updateProcessData` Try it out Updates the existing transaction in the backend once the message has been created.
### Information on failure of the assignment
**Check identifiers** - [21013](/en/schnittstellen/202610/pruefi/IFTSTA/PI_21013) — Status message · AS4
**Flow**
  1. Message to **MSBA** · AS4
  2. **Write endpoint** - Transaction updated — [Update process data](/en/api/202610/backend-schreiben-nb/updateprocessdata#prozessdaten-aktualiseren) `POST /updateProcessData` Try it out Updates the existing transaction in the backend once the message has been created.
### Information on failure of the assignment
**Check identifiers** - [21013](/en/schnittstellen/202610/pruefi/IFTSTA/PI_21013) — Status message · AS4
**Flow**
  1. Message to **LF** · AS4
  2. **Write endpoint** - Transaction updated — [Update process data](/en/api/202610/backend-schreiben-nb/updateprocessdata#prozessdaten-aktualiseren) `POST /updateProcessData` Try it out Updates the existing transaction in the backend once the message has been created.
Decision trees of this process | EBD | Name | |---|---| | [E_0201](/referenz/202610/ebd/E_0201) | Check registration of metering point operation | | [E_0232](/referenz/202610/ebd/E_0232) | Check notification on the overall transaction |
## Process information Wording of the consolidated version, profile ch. 2.3.1, p. 22.
  1. ### Preconditions Conclusion of a MSB contract.
  2. ### Results - The NB can distribute the master data changed as a result at the metering or market location of a location bundle to the authorised parties. - The NB sends the calculation formula to the MSBN. - 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/202610/NB/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. ### First message **MSBN** sends “Registration” (step 1). From here on, it is the turn of the party involved on this page.
  4. ### Objective The MSB is assigned to a metering location ( as part of 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 LF](/en/prozessdoku/202610/LF/WiM-Teil1-beginn-messstellenbetrieb) — LF - [View MSBA](/en/prozessdoku/202610/MSB--MSBA/WiM-Teil1-beginn-messstellenbetrieb) — the transferring MSB · market role MSB - [View MSBN](/en/prozessdoku/202610/MSB--MSBN/WiM-Teil1-beginn-messstellenbetrieb) — the receiving MSB · market role MSB *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 own role was already involved in this process, so the transaction already exists. Applies to: [7](#schritt-7) For the check identifiers of these steps there is no test case in the test data set; the »Try it out« button of the write interface therefore offers no body. Applies to: [7](#schritt-7), [8](#schritt-8), [14](#schritt-14), [15](#schritt-15), [16](#schritt-16), [17](#schritt-17), [18](#schritt-18)