# Processing and transmission of values from the MSB of the metering location — MSB-MELO view The MSB of the metering location transmits the processed values of the metering location to the responsible MSB of the market location. The process step applies only if one or more MSB of the metering location is/are assigned differently from the MSB of the market location. The MSB of the market location determines the values of the market location on the basis of the values of the metering location. The MSB of the market location transmits the processed values of the market location and, depending on the case, the values of the metering location to the LF, NB and ÜNB. ## Process flow from the perspective of the MSB (MSB-MELO) \nSystem diagram: Aufbereitung und Übermittlung von Werten vom MSB der Messlokation — view of MSB\n\n\nCustomer backend system\n\nMACO APP · MSB (entsprich…\n\nMarket partner\n\n\n\nProcess trigger received\n\nSTART_ERHEBUNG_MESSWE\nRTE\n\nAPI\n\nLoad data for processing\n\n\n3 read APIs called\n\nAPI\nlisted at the step\n\n1. Wert (Messlokation)\n\n\nMSB (entspricht dem M…\n\nAS4\n13017, 13018\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\n"} gesamt={"\nSequence diagram: Aufbereitung und Übermittlung von Werten vom MSB der Messlokation — view of MSB\n\n\nBackend (customer)\n\n\nMACO APP · MSB (entsprich…\n\n\nMSB (entspricht dem MSB a…\n\n\nSTART_ERHEBUNG_MESSWERTE\nTrigger event\n\n1. Wert (Messlokation)\nAS4 · PI 13017, 13018\n\nUpdate transaction\nUpdate process data\n"} titel="MSB-MELO" /> ## Process steps ### Value (metering location)
**Check identifiers** - [13017](/en/schnittstellen/202604/pruefi/MSCONS/PI_13017) — Meter reading (electricity) · AS4 - [13018](/en/schnittstellen/202604/pruefi/MSCONS/PI_13018) — Load curve metering location, grid coupling point, grid location · AS4
**Flow**
  1. **Prozessauslöser** [`START_ERHEBUNG_MESSWERTE`](/en/api/202604/ausloeser-msb/start-erhebung-messwerte) \"\n ],\n \"lokationsId\": \"\"\n }\n ],\n \"ZAEHLER\": [\n {\n \"zaehlernummer\": \"\"\n }\n ]\n },\n \"transaktionsdaten\": {\n \"absender\": {\n \"rollencodenummer\": \"\"\n },\n \"anfrageReferenz\": \"\",\n \"empfaenger\": {\n \"rollencodenummer\": \"\"\n },\n \"kategorie\": \"\",\n \"lokationsTyp\": \"\",\n \"sparte\": \"\",\n \"typ\": \"\"\n },\n \"zusatzdaten\": {\n \"eventname\": \"START_ERHEBUNG_MESSWERTE\",\n \"prozessId\": \"\"\n }\n}"} security={[{"bearer": []}]}>Ausprobieren The backend triggers this step with this event.
  2. **Load data for processing** - `LESEN_ENERGIEMENGE_ZAEHLERSTAND_BASIS` - [Read meter](/en/api/202604/backend-lesen/getcounterbasic#zahler-lesen) `GET /getCounterBasic` Try it - `LESEN_ENERGIEMENGE_LASTGANG_BASIS`
  3. Message to **MSB (corresponds to the MSB at the market location object)** · AS4
  4. **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 Wording of the consolidated version, profile ch. 2.4.1, pp. 19–20.
  1. ### Preconditions - The MSB knows the metering locations and market location - The MSB knows the calculation rules for forming the values of the market location - The MSB knows the authorised recipients of metered values
  2. ### Results - The values are available to the authorized parties on time. - When sending corrected values, it must be checked whether documents created on the basis of the erroneous values need to be corrected.
  3. ### Error case #### Result in the error case The requested values are not available to the authorized party on time.
  4. ### Trigger - A trigger named in the table „Presentation of the values to be transmitted“ exists or - there is a need to change values as part of the processing of values or - there is a request for values or - there is a complaint about values. **Runs beforehand:** [Setup of the configurations on the basis of an assignment of a LF to a market location or tranche](/en/prozessdoku/202604/MSB/GPKE-Teil3-einrichtung-der-konfigurationen-aufgrund-einer-zuordnung-eines-lf-zu-einer-marktlokation-bzw-tranche), [Device replacement](/en/prozessdoku/202604/MSB--MSBA/WiM-Teil1-geraetewechsel), [Device takeover](/en/prozessdoku/202604/MSB--MSBA/WiM-Teil1-geraeteuebernahme), [Metering location change from LF to MSB](/en/prozessdoku/202604/LF/WiM-Teil1-messlokationsaenderung-vom-lf-an-msb), [Metering location change from NB to MSB](/en/prozessdoku/202604/MSB/WiM-Teil1-messlokationsaenderung-vom-nb-an-msb) — these processes name the one shown here in their result.
  5. ### First message The party involved on this page is itself the sender of: „Value (metering location)“ to **MSB (corresponds to the MSB on the market location object)** (step 1).
  6. ### Objective The values have been transmitted to all authorized parties in accordance with the table „Presentation of the values to be transmitted“.
## 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 MSB-MALO](/en/prozessdoku/202604/MSB--MSB-MALO/WiM-Teil2-aufbereitung-und-uebermittlung-von-werten-vom-msb-der-messlokation) — MSB at the market location object · 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.* These read accesses are not listed in the API catalogue of this format version; the step therefore shows only their command, without address and without button. Applies to: [1](#schritt-1)