# Complaint about a definition of NB from MSB to NB — view MSB The LF or MSB determines that a - Metering time period definition of NB or - Switching time definition of NB or - Power curve definition of NB is not available or appears implausible to it. It submits a complaint about this to NB. The latter checks the incoming complaint and, if the complaint is unfounded, states that the definition is valid. ## Process flow from the perspective of the MSB \nSystem diagram: Reklamation einer Definition des NB vom MSB an NB — view of MSB\n\n\nCustomer backend system\n\nMACO APP · MSB\n\nMarket partner\n\n\n\nProcess trigger received\n\nSTART_REKLAMATION_DEFI\nNITION\n\nAPI\n\n1. Reklamation einer\nDefinition des NB\n\n\nNB\n\nAS4\n17122\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\n\n2. Ablehnung der\nReklamation\n\n\nNB\n\nAS4\n19123\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\n"} gesamt={"\nSequence diagram: Reklamation einer Definition des NB vom MSB an NB — view of MSB\n\n\nBackend (customer)\n\n\nMACO APP · MSB\n\n\nNB\n\n\nSTART_REKLAMATION_DEFINITION\nTrigger event\n\n1. Reklamation einer Definition des NB\nAS4 · PI 17122\n\nUpdate transaction\nUpdate process data\n\n2. Ablehnung der Reklamation\nAS4 · PI 19123 · E_0549\nE_0549 — Reklamation prüfen\n\nUpdate transaction\nUpdate process data\n"} titel="MSB" /> ## Process steps ### Complaint about a definition of the NB
**Check identifiers** - [17122](/en/schnittstellen/202604/pruefi/ORDERS/PI_17122) — Complaint about a definition · AS4
**Flow**
  1. **Prozessauslöser** [`START_REKLAMATION_DEFINITION`](/en/api/202604/ausloeser-msb/start-reklamation-definition) \"\n ]\n }\n ],\n \"REKLAMATION\": [\n {\n \"reklamationsgrund\": \"\"\n }\n ]\n },\n \"transaktionsdaten\": {\n \"absender\": {\n \"marktrolle\": \"\",\n \"rollencodenummer\": \"\"\n },\n \"anfragereferenznummer\": \"\",\n \"empfaenger\": {\n \"marktrolle\": \"\",\n \"rollencodenummer\": \"\"\n },\n \"kategorie\": \"\",\n \"sparte\": \"\"\n },\n \"zusatzdaten\": {\n \"eventname\": \"START_REKLAMATION_DEFINITION\",\n \"prozessId\": \"\"\n }\n}"} security={[{"bearer": []}]}>Ausprobieren The backend triggers this step with this event.
  2. Message to **NB** · AS4
  3. **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.
### Rejection of the complaint
**Check identifiers** - [19123](/en/schnittstellen/202604/pruefi/ORDRSP/PI_19123) — Rejection of complaint about a definition · AS4
**Flow**
  1. Message from **NB** · AS4
    **Response per decision tree** - `19123` → [E_0549](/en/referenz/202604/ebd/E_0549) · NB · Check complaint
  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 with the data of the incoming message.
Decision trees of this process | EBD | Name | |---|---| | [E_0549](/referenz/202604/ebd/E_0549) | Check complaint |
## Process information Wording of the consolidated version, profile ch. 1.2.7.1, p. 28.
  1. ### Preconditions - The LF or MSB is missing a definition or - a definition appears implausible to the LF or MSB.
  2. ### Results - If a definition subject to complaint has to be corrected, the use case “[Transmission of a definition of NB by NB](/en/prozessdoku/202604/MSB/GPKE-Teil3-uebermittlung-einer-definition-des-nb-durch-den-nb)” must be carried out for the definition subject to complaint to all LF and MSB to which the definition to be corrected was transmitted. - If a definition subject to complaint was not transmitted, the use case “[Transmission of a definition of NB by NB](/en/prozessdoku/202604/MSB/GPKE-Teil3-uebermittlung-einer-definition-des-nb-durch-den-nb)” must be carried out for the definition subject to complaint to all LF and MSB to which the definition was not transmitted.
  3. ### Further requirements In the case of the metering time period definition of the NB: A metering time period definition of the NB can also be complained about by the final customer in his role as LF to the NB if, within the scope of grid usage settlement, the final customer assumes the role of the LF, insofar as these rules apply to him accordingly.
  4. ### First message The party involved on this page is itself the sender of: „Complaint about a definition of the NB“ to **NB** (step 1).
  5. ### Objective The LF or MSB has an implausible or missing - Metering time period definition of NB or - Switching time definition of NB or - Power curve definition of NB has been the subject of a complaint.
## 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 NB](/en/prozessdoku/202604/NB/GPKE-Teil3-reklamation-einer-definition-des-nb-vom-msb-an-nb) — 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 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: [2](#schritt-2)