# Fault rectification at the metering location — View MSB ## Process flow from the perspective of the MSB \nSystem diagram: Störungsbehebung in der Messlokation — view of MSB\n\n\nCustomer backend system\n\nMACO APP · MSB\n\nMarket partner\n\n\n\n1. Meldung einer Störung\n\nLF\n\nMessage\n23001, 23001\n\nCreate transaction\n\n\nCreate process data\n\nAPI\n\n2. Antwort\n\n\nLF\n\nMessage\n23003, 23003, 23004…\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\n\n3. Information über Störung\nan Messlokation\n\n\nNB\n\nMessage\n23005\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\n\n4. Mitteilung Ergebnis\n\n\nLF\n\nMessage\n23008, 23008\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\n\n5. Informationsmeldung über\nBehebung\n\n\nNB\n\nMessage\n23009\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\n"} gesamt={"\nSequence diagram: Störungsbehebung in der Messlokation — view of MSB\n\n\nBackend (customer)\n\n\nMACO APP · MSB\n\n\nLF\n\n\nNB\n\n\n1. Meldung einer Störung\nPI 23001, 23001\n\nCreate transaction\nCreate process data\n\n2. Antwort\nPI 23003, 23003, 23004…\n\nUpdate transaction\nUpdate process data\n\n3. Information über Störung an Messlokation\nPI 23005\n\nUpdate transaction\nUpdate process data\n\n4. Mitteilung Ergebnis\nPI 23008, 23008\n\nUpdate transaction\nUpdate process data\n\n5. Informationsmeldung über Behebung\nPI 23009\n\nUpdate transaction\nUpdate process data\n"} titel="MSB" /> ## Process steps ### Notification of a fault
**Check identifiers** - [23001](/en/schnittstellen/202604/pruefi/INSRPT/PI_23001) — Fault notification
**Flow**
  1. Message from **LF**
  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.
### Response
**Check identifiers** - [23003](/en/schnittstellen/202604/pruefi/INSRPT/PI_23003) — Rejection - [23004](/en/schnittstellen/202604/pruefi/INSRPT/PI_23004) — Confirmation
**Flow**
  1. Message to **LF**
  2. **Write endpoint** - Transaction updated — [Update process data](/en/api/202604/backend-schreiben-msb/updateprocessdata#prozessdaten-aktualiseren) `POST /updateProcessData` Try it out Updates the existing transaction in the backend once the message has been created.
### Information about fault at metering location
**Check identifiers** - [23005](/en/schnittstellen/202604/pruefi/INSRPT/PI_23005) — Information notification
**Flow**
  1. Message to **NB**
  2. **Write endpoint** - Transaction updated — [Update process data](/en/api/202604/backend-schreiben-msb/updateprocessdata#prozessdaten-aktualiseren) `POST /updateProcessData` Try it out Updates the existing transaction in the backend once the message has been created.
### Result notification
**Check identifiers** - [23008](/en/schnittstellen/202604/pruefi/INSRPT/PI_23008) — Result report
**Flow**
  1. Message to **LF**
  2. **Write endpoint** - Transaction updated — [Update process data](/en/api/202604/backend-schreiben-msb/updateprocessdata#prozessdaten-aktualiseren) `POST /updateProcessData` Try it out Updates the existing transaction in the backend once the message has been created.
### Information notification on rectification
**Check identifiers** - [23009](/en/schnittstellen/202604/pruefi/INSRPT/PI_23009) — Information notification
**Flow**
  1. Message to **NB**
  2. **Write endpoint** - Transaction updated — [Update process data](/en/api/202604/backend-schreiben-msb/updateprocessdata#prozessdaten-aktualiseren) `POST /updateProcessData` Try it out Updates the existing transaction in the backend once the message has been created.
## Process information
  1. ### First message **LF** sends “Report of a fault” (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 LF](/en/prozessdoku/202604/LF/awh-wim-gas-2-0-storungsbehebung-in-der-messlokation) — LF - [View NB](/en/prozessdoku/202604/NB/awh-wim-gas-2-0-storungsbehebung-in-der-messlokation) — NB *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. ::: 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: [1](#schritt-1)