# Master data change initiated by NB (responsible) — View NB ## Process flow from the perspective of the NB \nSystem diagram: Stammdatenänderung vom NB (verantwortlich) ausgehend — view of NB\n\n\nCustomer backend system\n\nMACO APP · NB\n\nMarket partner\n\n\n\nTriggered by incoming\nmessage: 21010\n\nProcess trigger received\n\n\nSTART_VERSAND_SDAE\n\nAPI\n\nLoad data for processing\n\n\n4 read APIs called\n\nAPI\nlisted at the step\n\n1. Änderung vom NB an den\nLF\n\n\nLF\n\nAS4\n44112, 44123, 44175\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\nmarktlokationsId != null\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\nmesslokationsId != null\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\nPI 44123\n\n2. Änderung vom NB an MSB\n\n\nLF\n\nAS4\n44115, 44124, 44176\n\nAPERAK check: Z33\n\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\nmarktlokationsId != null\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\nmesslokationsId != null\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\nPI 44124\n\nProcess trigger received\n\n\n2 alternative events\n\nAPI\n\n3. Antwort auf Änderung vom\nNB an den LF\n\n\nMSB\n\nAS4\n44113\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\nmarktlokationsId != null\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\nmesslokationsId != null\n\n4. Antwort auf Änderung vom\nNB an MSB\n\n\nMSB\n\nAS4\n44115\n\nAPERAK check: Z33\n\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\nmarktlokationsId != null\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\nmesslokationsId != null\n"} gesamt={"\nSequence diagram: Stammdatenänderung vom NB (verantwortlich) ausgehend — view of NB\n\n\nBackend (customer)\n\n\nMACO APP · NB\n\n\nLF\n\n\nMSB\n\n\nSTART_VERSAND_SDAE\nTrigger event\n\n1. Änderung vom NB an den LF\nAS4 · PI 44112, 44123, 44175\n\nUpdate transaction\nUpdate process data · marktlokationsId != null\n\nUpdate transaction\nUpdate process data · messlokationsId != null\n\nUpdate transaction\nUpdate process data · PI 44123\n\n2. Änderung vom NB an MSB\nAS4 · PI 44115, 44124, 44176 · E_3010\nE_3010 — Änderung vom NB prüfen\n\nUpdate transaction\nUpdate process data · marktlokationsId != null\n\nUpdate transaction\nUpdate process data · messlokationsId != null\n\nUpdate transaction\nUpdate process data · PI 44124\n\n2 alternative events\nTrigger event\n\n3. Antwort auf Änderung vom NB an den LF\nAS4 · PI 44113\n\nUpdate transaction\nUpdate process data · marktlokationsId != null\n\nUpdate transaction\nUpdate process data · messlokationsId != null\n\n4. Antwort auf Änderung vom NB an MSB\nAS4 · PI 44115 · E_3021\nE_3021 — Änderung vom NB prüfen\n\nUpdate transaction\nUpdate process data · marktlokationsId != null\n\nUpdate transaction\nUpdate process data · messlokationsId != null\n"} titel="NB" /> ## Process steps ### Change from the NB to the LF
**Check identifiers** - [44112](/en/schnittstellen/202604/pruefi/UTILMD_GAS/PI_44112) — Non-bal.rel. change from NB · AS4 - [44123](/en/schnittstellen/202604/pruefi/UTILMD_GAS/PI_44123) — Bal.-rel. change from NB with dependencies · AS4 - [44175](/en/schnittstellen/202604/pruefi/UTILMD_GAS/PI_44175) — Change to the market location structure · AS4
**Flow**
  1. **Triggered by incoming message** - [21010](/schnittstellen/202604/pruefi/IFTSTA/PI_21010) The MACO APP sends this message itself, as a follow-up process after this incoming message. In addition, the backend can trigger this step with an event — the next item.
  2. **Prozessauslöser** [`START_VERSAND_SDAE`](/en/api/202604/ausloeser-nb/start-versand-sdae) \",\n \"gewerbekennzeichnung\": \"\",\n \"name1\": \"\",\n \"name2\": \"\",\n \"name3\": \"\",\n \"name4\": \"\",\n \"partneradresse\": \"\"\n },\n \"hausverwalter\": {\n \"anrede\": \"\",\n \"gewerbekennzeichnung\": \"\",\n \"name1\": \"\",\n \"name2\": \"\",\n \"name3\": \"\",\n \"name4\": \"\",\n \"partneradresse\": \"\"\n },\n \"lokationsadresse\": {\n \"hausnummer\": \"\",\n \"landescode\": \"\",\n \"ort\": \"\",\n \"ortsteil\": \"\",\n \"postfach\": \"\",\n \"postleitzahl\": \"\",\n \"strasse\": \"\",\n \"zusatzInformation\": \"\"\n },\n \"marktgebiet\": \"\",\n \"marktlokationsId\": \"\",\n \"netzebene\": \"\",\n \"zaehlwerke\": [\n \"\"\n ]\n }\n ],\n \"MESSLOKATION\": [\n {\n \"gasqualitaet\": \"\",\n \"marktrollen\": [\n \"\"\n ],\n \"messlokationsId\": \"\"\n }\n ],\n \"NETZNUTZUNGSVERTRAG\": [\n {\n \"gemeinderabatt\": null,\n \"korrespondenzpartner\": {\n \"anrede\": \"\",\n \"gewerbekennzeichnung\": \"\",\n \"name1\": \"\",\n \"name2\": \"\",\n \"name3\": \"\",\n \"name4\": \"\",\n \"partneradresse\": \"\"\n },\n \"vertragsbeginn\": \"\",\n \"vertragskonditionen\": {\n \"naechstenetznutzungsabrechnung\": \"\",\n \"netznutzungsabrechnung\": \"\",\n \"netznutzungsabrechnungIntervall\": \"\",\n \"netznutzungsabrechnungsvariante\": \"\",\n \"netznutzungsvertrag\": \"\",\n \"netznutzungszahler\": \"\",\n \"startAbrechnungsjahr\": \"\"\n },\n \"vertragspartner2\": [\n \"\"\n ]\n }\n ]\n },\n \"transaktionsdaten\": {\n \"absender\": {\n \"rollencodenummer\": \"\"\n },\n \"empfaenger\": {\n \"marktrolle\": \"\",\n \"rollencodenummer\": \"\"\n },\n \"gueltigAb\": \"\",\n \"kategorie\": \"\",\n \"sparte\": \"\",\n \"transaktionsgrund\": \"\",\n \"transaktionsgrundergaenzung\": \"\"\n },\n \"zusatzdaten\": {\n \"eventname\": \"START_VERSAND_SDAE\",\n \"prozessId\": \"\"\n }\n}"} security={[{"bearer": []}]}>Ausprobieren The backend triggers this step with this event.
  3. **Load data for processing** - [Read market location](/en/api/202604/backend-lesen/getmarketlocationbasic#marktlokation-lesen) `GET /getMarketLocationBasic` Try it - [Read metering location](/en/api/202604/backend-lesen/getmeterlocationbasic#messlokation-lesen) `GET /getMeterLocationBasic` Try it - [Read grid usage contract](/en/api/202604/backend-lesen/getgridusagecontractbasic#netznutzungsvertrag-lesen) `GET /getGridUsageContractBasic` Try it - [Read meter](/en/api/202604/backend-lesen/getcounterbasic#zahler-lesen) `GET /getCounterBasic` Try it
  4. Message to **LF** · AS4
  5. **Write endpoint** - `44112`, `44175` · `marktlokationsId != null` → Transaction updated — [Update process data](/en/api/202604/backend-schreiben-nb/updateprocessdata#prozessdaten-aktualiseren) `POST /updateProcessData` Try it out Updates the existing transaction in the backend once the message has been created.
  6. **Write endpoint** - `44112`, `44175` · `messlokationsId != null` → Transaction updated — [Update process data](/en/api/202604/backend-schreiben-nb/updateprocessdata#prozessdaten-aktualiseren) `POST /updateProcessData` Try it out Updates the existing transaction in the backend once the message has been created.
  7. **Write endpoint** - `44123` → Transaction updated — [Update process data](/en/api/202604/backend-schreiben-nb/updateprocessdata#prozessdaten-aktualiseren) `POST /updateProcessData` Try it out Updates the existing transaction in the backend once the message has been created.
### Change from the NB to MSB
**Check identifiers** - [44115](/en/schnittstellen/202604/pruefi/UTILMD_GAS/PI_44115) — Response to change from NB · AS4 - [44124](/en/schnittstellen/202604/pruefi/UTILMD_GAS/PI_44124) — Response to change from NB · AS4 - [44176](/en/schnittstellen/202604/pruefi/UTILMD_GAS/PI_44176) — Response to change to the market location structure · AS4
**Flow**
  1. Message from **LF** · AS4
    **Response per decision tree** - `44115`, `44124`, `44176` → [E_3010](/en/referenz/202604/ebd/E_3010) · Check change from the NB
  2. **APERAK checks** - `44115`, `44124`, `44176` → `Z33`
  3. **Write endpoint** - `44115`, `44176` · `marktlokationsId != null` → Transaction updated — [Update process data](/en/api/202604/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.
  4. **Write endpoint** - `44115`, `44176` · `messlokationsId != null` → Transaction updated — [Update process data](/en/api/202604/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.
  5. **Write endpoint** - `44124` → Transaction updated — [Update process data](/en/api/202604/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 change from the NB to the LF
**Check identifiers** - [44113](/en/schnittstellen/202604/pruefi/UTILMD_GAS/PI_44113) — Non-bal.rel. change from NB · AS4
**Flow**
  1. **Process trigger** - [`START_ANFRAGE_STAMMDATENAENDERUNG_GAS`](/en/api/202604/ausloeser-nb/start-anfrage-stammdatenaenderung-gas) \",\n \"gewerbekennzeichnung\": \"\",\n \"name1\": \"\",\n \"name2\": \"\",\n \"name3\": \"\",\n \"name4\": \"\",\n \"partneradresse\": \"\"\n },\n \"hausverwalter\": {\n \"anrede\": \"\",\n \"gewerbekennzeichnung\": \"\",\n \"name1\": \"\",\n \"name2\": \"\",\n \"name3\": \"\",\n \"name4\": \"\",\n \"partneradresse\": \"\"\n },\n \"marktlokationsId\": \"\"\n }\n ],\n \"MESSLOKATION\": [\n {\n \"gasqualitaet\": \"\",\n \"marktrollen\": [\n \"\"\n ],\n \"messlokationsId\": \"\"\n }\n ],\n \"MESSSTELLENBETRIEBSVERTRAG\": [\n {\n \"lokationsId\": \"\",\n \"lokationsTyp\": \"\",\n \"vertragskonditionen\": {\n \"geplanteTurnusablesung\": \"\"\n }\n }\n ],\n \"NETZNUTZUNGSVERTRAG\": [\n {\n \"korrespondenzpartner\": {\n \"anrede\": \"\",\n \"gewerbekennzeichnung\": \"\",\n \"name1\": \"\",\n \"name2\": \"\",\n \"name3\": \"\",\n \"name4\": \"\",\n \"partneradresse\": \"\"\n },\n \"vertragsbeginn\": \"\",\n \"vertragspartner2\": [\n \"\"\n ]\n }\n ]\n },\n \"transaktionsdaten\": {\n \"absender\": {\n \"rollencodenummer\": \"\"\n },\n \"empfaenger\": {\n \"rollencodenummer\": \"\"\n },\n \"gueltigAb\": \"\",\n \"kategorie\": \"\",\n \"sparte\": \"\",\n \"transaktionsgrund\": \"\"\n },\n \"zusatzdaten\": {\n \"eventname\": \"START_ANFRAGE_STAMMDATENAENDERUNG\",\n \"prozessId\": \"\"\n }\n}"} security={[{"bearer": []}]}>Ausprobieren - [`START_VERSAND_SDAE`](/en/api/202604/ausloeser-nb/start-versand-sdae) \",\n \"gewerbekennzeichnung\": \"\",\n \"name1\": \"\",\n \"name2\": \"\",\n \"name3\": \"\",\n \"name4\": \"\",\n \"partneradresse\": \"\"\n },\n \"hausverwalter\": {\n \"anrede\": \"\",\n \"gewerbekennzeichnung\": \"\",\n \"name1\": \"\",\n \"name2\": \"\",\n \"name3\": \"\",\n \"name4\": \"\",\n \"partneradresse\": \"\"\n },\n \"lokationsadresse\": {\n \"hausnummer\": \"\",\n \"landescode\": \"\",\n \"ort\": \"\",\n \"ortsteil\": \"\",\n \"postfach\": \"\",\n \"postleitzahl\": \"\",\n \"strasse\": \"\",\n \"zusatzInformation\": \"\"\n },\n \"marktgebiet\": \"\",\n \"marktlokationsId\": \"\",\n \"netzebene\": \"\",\n \"zaehlwerke\": [\n \"\"\n ]\n }\n ],\n \"MESSLOKATION\": [\n {\n \"gasqualitaet\": \"\",\n \"marktrollen\": [\n \"\"\n ],\n \"messlokationsId\": \"\"\n }\n ],\n \"NETZNUTZUNGSVERTRAG\": [\n {\n \"gemeinderabatt\": null,\n \"korrespondenzpartner\": {\n \"anrede\": \"\",\n \"gewerbekennzeichnung\": \"\",\n \"name1\": \"\",\n \"name2\": \"\",\n \"name3\": \"\",\n \"name4\": \"\",\n \"partneradresse\": \"\"\n },\n \"vertragsbeginn\": \"\",\n \"vertragskonditionen\": {\n \"naechstenetznutzungsabrechnung\": \"\",\n \"netznutzungsabrechnung\": \"\",\n \"netznutzungsabrechnungIntervall\": \"\",\n \"netznutzungsabrechnungsvariante\": \"\",\n \"netznutzungsvertrag\": \"\",\n \"netznutzungszahler\": \"\",\n \"startAbrechnungsjahr\": \"\"\n },\n \"vertragspartner2\": [\n \"\"\n ]\n }\n ]\n },\n \"transaktionsdaten\": {\n \"absender\": {\n \"rollencodenummer\": \"\"\n },\n \"empfaenger\": {\n \"marktrolle\": \"\",\n \"rollencodenummer\": \"\"\n },\n \"gueltigAb\": \"\",\n \"kategorie\": \"\",\n \"sparte\": \"\",\n \"transaktionsgrund\": \"\",\n \"transaktionsgrundergaenzung\": \"\"\n },\n \"zusatzdaten\": {\n \"eventname\": \"START_VERSAND_SDAE\",\n \"prozessId\": \"\"\n }\n}"} security={[{"bearer": []}]}>Ausprobieren The backend triggers this step with one of these events.
  2. Message to **MSB** · AS4
  3. **Write endpoint** - `marktlokationsId != null` → Transaction updated — [Update process data](/en/api/202604/backend-schreiben-nb/updateprocessdata#prozessdaten-aktualiseren) `POST /updateProcessData` Try it out Updates the existing transaction in the backend once the message has been created.
  4. **Write endpoint** - `messlokationsId != null` → Transaction updated — [Update process data](/en/api/202604/backend-schreiben-nb/updateprocessdata#prozessdaten-aktualiseren) `POST /updateProcessData` Try it out Updates the existing transaction in the backend once the message has been created.
### Response to change from the NB to MSB
**Check identifiers** - [44115](/en/schnittstellen/202604/pruefi/UTILMD_GAS/PI_44115) — Response to change from NB · AS4
**Flow**
  1. Message from **MSB** · AS4
    **Response per decision tree** - `44115` → [E_3021](/en/referenz/202604/ebd/E_3021) · Check change from the NB
  2. **APERAK checks** - `44115` → `Z33`
  3. **Write endpoint** - `marktlokationsId != null` → Transaction updated — [Update process data](/en/api/202604/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.
  4. **Write endpoint** - `messlokationsId != null` → Transaction updated — [Update process data](/en/api/202604/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.
Decision trees of this process | EBD | Name | |---|---| | [E_3010](/referenz/202604/ebd/E_3010) | Check change from the NB | | [E_3021](/referenz/202604/ebd/E_3021) | Check change from the NB |
## Process information
  1. ### Trigger **Runs beforehand:** [Billing data for balancing group settlement](/en/prozessdoku/202604/NB/GPKE-Teil2-abrechnungsdaten-bilanzkreisabrechnung), [Start of replacement supply / default supply](/en/prozessdoku/202604/NB/GPKE-Teil2-beginn-der-ersatz-grundversorgung), [Case 1: LF assignment for EEG market location without DV obligation or KWKG market location without DV obligation](/en/prozessdoku/202604/NB/GPKE-Teil2-fall-1-lf-zuordnung-bei-eeg-marktlokation-ohne-dv-pflicht-bzw-kwkg-marktlokation-ohne-dv-pflicht), [Case 2: LF assignment for EEG market location with DV obligation](/en/prozessdoku/202604/NB/GPKE-Teil2-fall-2-lf-zuordnung-bei-eeg-marktlokation-mit-dv-pflicht), [Case 3: LF assignment for KWKG market location with DV obligation or non-EEG / non-KWKG market location and the market location is mapped without tranches](/en/prozessdoku/202604/NB/GPKE-Teil2-fall-3-lf-zuordnung-bei-kwkg-marktlokation-mit-dv-pflicht-bzw-nicht-eeg-nicht-kwkg-marktlokation-und-marktlokation-wird-nicht-tranchiert-abgebildet), [Case 4: LF assignment for KWKG market location with DV obligation or non-EEG / non-KWKG market location and the market location is mapped with tranches](/en/prozessdoku/202604/NB/GPKE-Teil2-fall-4-lf-zuordnung-bei-kwkg-marktlokation-mit-dv-pflicht-bzw-nicht-eeg-nicht-kwkg-marktlokation-und-marktlokation-wird-tranchiert-abgebildet), [Start of supply](/en/prozessdoku/202604/NB/GPKE-Teil2-lieferbeginn), [End of supply from NB to LF](/en/prozessdoku/202604/NB/GPKE-Teil2-lieferende-von-nb-an-lf), [Creation](/en/prozessdoku/202604/NB/GPKE-Teil2-neuanlage), [Transmission of the calculation formula](/en/prozessdoku/202604/NB/WiM-Teil2-uebermittlung-der-berechnungsformel) — these processes name the one shown here in their result.
  2. ### First message The party involved on this page is itself the sender of: „Change from the NB to the LF“ to **LF** (step 1).
## 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/202604/LF/geli-gas-2-0-stammdatenanderung-vom-nb-verantwortlich-ausgehend) — LF - [View MSB](/en/prozessdoku/202604/MSB/geli-gas-2-0-stammdatenanderung-vom-nb-verantwortlich-ausgehend) — MSB *The source provides no use case profile for this process — objective, precondition and result are not recorded there.* *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.* :::caution{title="Step sequence reconstructed"} For this process, the BNetzA consolidated version carries no sequence diagram. The steps are reconstructed from the BDEW check identifier table: grouped by the designation, ordered by the process step. The method agrees with the consolidated version in 200 of 200 cases that can be cross-checked — the individual line is nevertheless not editorially reviewed. Check it against the rulebook before adopting it into an implementation specification. :::