# Request for master data change from the LF to MSB (responsible) — NB view ## Process flow from the perspective of the NB \nSystem diagram: Anfrage zur Stammdatenänderung vom LF an MSB (verantwortlich) — view of NB\n\n\nCustomer backend system\n\nMACO APP · NB (Verteiler)\n\nMarket partner\n\n\n\n1. Anfrage an MSB\n\nLF (Berechtigter)\n\nAS4\n44162, 44143\n\nLoad data for the incoming\ncheck\n\n\nMesslokation lesen\n\nAPI\n\nAPERAK check: Z10\n\n\nCreate transaction\n\n\nCreate process data\n\nAPI\n\nTrigger follow-up process:\n44147, 44165\n\n\nTriggered by incoming\nmessage: 44143, 44162\n\n\n2. Anfrage an MSB\n(Weiterleitung)\n\n\nMSB (Berechtigter)\n\nAS4\n44165, 44147\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\n\n3. Antwort auf Anfrage an\nMSB\n\n\nMSB (Berechtigter)\n\nAS4\n44167, 44149\n\nAPERAK check: Z33\n\n\nCreate transaction\n\n\nCreate process data\n\nAPI\n\n4. Antwort auf Anfrage an\nMSB\n\n\nLF (Berechtigter)\n\nAS4\n44163, 44164, 44145…\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\n\nTriggered by incoming\nmessage: 44116, 44140,\n44159\n\n\nProcess trigger received\n\n\nSTART_ANFRAGE_STAMMDA\nTENAENDERUNG…\n\nAPI\n\n5. Ggf. Änderung vom MSB\n\n\nLF (weiterer LF als B…\n\nAS4\n44160, 44117\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\n\n6. Antwort auf Änderung vom\nMSB\n\n\nLF (weiterer LF als B…\n\nAS4\n44161, 44119\n\nAPERAK check: Z33\n\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\n"} gesamt={"\nSequence diagram: Anfrage zur Stammdatenänderung vom LF an MSB (verantwortlich) — view of NB\n\n\nBackend (customer)\n\n\nMACO APP · NB (Verteiler)\n\n\nLF (Berechtigter)\n\n\nMSB (Berechtigter)\n\n\nLF (weiterer LF als Berec…\n\n\n1. Anfrage an MSB\nAS4 · PI 44162, 44143\n\nCreate transaction\nCreate process data\n\n2. Anfrage an MSB (Weiterleitung)\nAS4 · PI 44165, 44147\n\nUpdate transaction\nUpdate process data\n\n3. Antwort auf Anfrage an MSB\nAS4 · PI 44167, 44149 · E_3016\nE_3016 — Anfrage an MSB prüfen\n\nCreate transaction\nCreate process data\n\n4. Antwort auf Anfrage an MSB\nAS4 · PI 44163, 44164, 44145… · E_3017, E_3031\nE_3017 — Antwort auf Anfrage an MSB (Weiterleitung) prüfen\nE_3031 — Weiterleitung der Anfrage an MSB prüfen\n\nUpdate transaction\nUpdate process data\n\nSTART_ANFRAGE_STAMMDATENAENDERUNG_GAS\nTrigger event\n\n5. Ggf. Änderung vom MSB\nAS4 · PI 44160, 44117\n\nUpdate transaction\nUpdate process data\n\n6. Antwort auf Änderung vom MSB\nAS4 · PI 44161, 44119 · E_3032\nE_3032 — Änderung vom MSB prüfen\n\nUpdate transaction\nUpdate process data\n"} titel="NB" /> ## Process steps ### Request to MSB
**Check identifiers** - [44162](/en/schnittstellen/202604/pruefi/UTILMD_GAS/PI_44162) — Request to MSB without dependencies · AS4 - [44143](/en/schnittstellen/202604/pruefi/UTILMD_GAS/PI_44143) — Request to MSB with dependencies · AS4
**Flow**
  1. Message from **LF (authorised party)** · AS4
  2. **Load data for the incoming check** - [Read metering location](/en/api/202604/backend-lesen/getmeterlocationbasic#messlokation-lesen) `GET /getMeterLocationBasic` Try it
  3. **APERAK checks** - `44162`, `44143` → `Z10`
  4. **Write endpoint** - Transaction created — [Create process data](/en/api/202604/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.
  5. **Trigger follow-up process** - [44147](/en/schnittstellen/202604/pruefi/UTILMD_GAS/PI_44147) — Request to MSB with dependencies - [44165](/en/schnittstellen/202604/pruefi/UTILMD_GAS/PI_44165) — Not bal.-rel. request to MSB without dependencies After processing, the MACO APP starts the follow-up process itself; which of them runs depends on the result of the processing.
### Request to MSB (forwarding)
**Check identifiers** - [44165](/en/schnittstellen/202604/pruefi/UTILMD_GAS/PI_44165) — Not bal.-rel. request to MSB without dependencies · AS4 - [44147](/en/schnittstellen/202604/pruefi/UTILMD_GAS/PI_44147) — Request to MSB with dependencies · AS4
**Flow**
  1. **Triggered by incoming message** - [44143](/en/schnittstellen/202604/pruefi/UTILMD_GAS/PI_44143) — Request to MSB with dependencies - [44162](/en/schnittstellen/202604/pruefi/UTILMD_GAS/PI_44162) — Request to MSB without dependencies The MACO APP sends this message itself, as a follow-up process after one of these incoming messages.
  2. Message to **MSB (authorised party)** · AS4
  3. **Write endpoint** - 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 request to MSB
**Check identifiers** - [44167](/en/schnittstellen/202604/pruefi/UTILMD_GAS/PI_44167) — Response to request · AS4 - [44149](/en/schnittstellen/202604/pruefi/UTILMD_GAS/PI_44149) — Response to request · AS4
**Flow**
  1. Message from **MSB (authorised party)** · AS4
    **Response per decision tree** - `44167`, `44149` → [E_3016](/en/referenz/202604/ebd/E_3016) · Check request to MSB
  2. **APERAK checks** - `44167`, `44149` → `Z33`
  3. **Write endpoint** - Transaction created — [Create process data](/en/api/202604/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.
### Response to request to MSB
**Check identifiers** - [44163](/en/schnittstellen/202604/pruefi/UTILMD_GAS/PI_44163) — Response to request · AS4 - [44164](/en/schnittstellen/202604/pruefi/UTILMD_GAS/PI_44164) — Rejection of request · AS4 - [44145](/en/schnittstellen/202604/pruefi/UTILMD_GAS/PI_44145) — Response to request · AS4 - [44146](/en/schnittstellen/202604/pruefi/UTILMD_GAS/PI_44146) — Rejection of the request · AS4
**Flow**
  1. Message to **LF (authorised party)** · AS4
    **Response per decision tree** - `44163` → [E_3031](/en/referenz/202604/ebd/E_3031) · Check forwarding of the request to MSB - `44163`, `44164`, `44145`, `44146` → [E_3017](/en/referenz/202604/ebd/E_3017) · Check response to request to MSB (forwarding)
  2. **Write endpoint** - 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 MSB, if applicable
**Check identifiers** - [44160](/en/schnittstellen/202604/pruefi/UTILMD_GAS/PI_44160) — Change from MSB without dependencies · AS4 - [44117](/en/schnittstellen/202604/pruefi/UTILMD_GAS/PI_44117) — Change from MSB with dependencies · AS4
**Flow**
  1. **Triggered by incoming message** - [44116](/schnittstellen/202604/pruefi/UTILMD_GAS/PI_44116) - [44140](/schnittstellen/202604/pruefi/UTILMD_GAS/PI_44140) - [44159](/schnittstellen/202604/pruefi/UTILMD_GAS/PI_44159) The MACO APP sends this message itself, as a follow-up process after one of these incoming messages. In addition, the backend can trigger this step with an event — the next item.
  2. **Prozessauslöser** [`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 The backend triggers this step with this event.
  3. Message to **LF (further LF as authorised party)** · AS4
  4. **Write endpoint** - 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 MSB
**Check identifiers** - [44161](/en/schnittstellen/202604/pruefi/UTILMD_GAS/PI_44161) — Response to change · AS4 - [44119](/en/schnittstellen/202604/pruefi/UTILMD_GAS/PI_44119) — Response to change from MSB · AS4
**Flow**
  1. Message from **LF (further LF as authorised party)** · AS4
    **Response per decision tree** - `44161`, `44119` → [E_3032](/en/referenz/202604/ebd/E_3032) · Check change from the MSB
  2. **APERAK checks** - `44161`, `44119` → `Z33`
  3. **Write endpoint** - 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_3016](/referenz/202604/ebd/E_3016) | Check request to MSB | | [E_3017](/referenz/202604/ebd/E_3017) | Check response to request to MSB (forwarding) | | [E_3031](/referenz/202604/ebd/E_3031) | Check forwarding of the request to MSB | | [E_3032](/referenz/202604/ebd/E_3032) | Check change from the MSB |
## Process information
  1. ### First message **LF (authorised party)** sends “Request to MSB” (step 1). From here on, it is the turn of the party involved on this page.
## 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 BER](/en/prozessdoku/202604/LF--BER/geli-gas-2-0-anfrage-zur-stammdatenanderung-vom-lf-an-msb-verantwortlich) — the authorised party in this process step · market role LF - [View WLF](/en/prozessdoku/202604/LF--WLF/geli-gas-2-0-anfrage-zur-stammdatenanderung-vom-lf-an-msb-verantwortlich) — a further supplier as authorised party · market role LF - [View BER](/en/prozessdoku/202604/MSB/geli-gas-2-0-anfrage-zur-stammdatenanderung-vom-lf-an-msb-verantwortlich) — the authorised party in this process step · market role 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. :::