# Cancellation of values from MSB of the market location — View LF The MSB of the market location transmits a cancellation for values already transmitted to the parties that previously received the values to be cancelled. The MSB of the metering location transmits a cancellation for values already transmitted to the MSB of the market location. ## Process flow from the perspective of the LF \nSystem diagram: Stornierung Werte vom MSB der Marktlokation — view of LF\n\n\nCustomer backend system\n\nMACO APP · LF\n\nMarket partner\n\n\n\n2. Stornierung an LF\n\nMSB (entspricht MSB a…\n\nAS4\n13006\n\nAPERAK check: Z33\n\n\nCreate transaction\n\n\nCreate process data\n\nAPI\n"} gesamt={"\nSequence diagram: Stornierung Werte vom MSB der Marktlokation — view of LF\n\n\nBackend (customer)\n\n\nMACO APP · LF\n\n\nMSB (entspricht MSB am Ob…\n\n\nNB\n\n\nÜNB\n\n\n1. Stornierung an NB\nAS4 · PI 13006\n\n2. Stornierung an LF\nAS4 · PI 13006\n\nCreate transaction\nCreate process data\n\n3. Stornierung an ÜNB\nAS4 · PI 13006\n"} titel="LF" /> ## Process steps ### Cancellation to NB This step runs between other market partners and is not relevant for this view.
**Check identifiers** - [13006](/en/schnittstellen/202610/pruefi/MSCONS/PI_13006) — Meter reading value cancellation · AS4
### Cancellation to LF
**Check identifiers** - [13006](/en/schnittstellen/202610/pruefi/MSCONS/PI_13006) — Meter reading value cancellation · AS4
**Flow**
  1. Message from **MSB (corresponds to MSB at the market location object)** · AS4
  2. **APERAK checks** - `13006` → `Z33` — APERAK check: Is referenced message known ?
  3. **Write endpoint** - Transaction created — [Create process data](/en/api/202610/backend-schreiben-lf/createprocessdata#prozessdaten-erstellen) `POST /createProcessData` Try it out Creates a new transaction in the backend with the data of the incoming message.
### Cancellation to ÜNB This step runs between other market partners and is not relevant for this view.
**Check identifiers** - [13006](/en/schnittstellen/202610/pruefi/MSCONS/PI_13006) — Meter reading value cancellation · AS4
## Process information Wording of the consolidated version, profile ch. 2.8.1, p. 55.
  1. ### Preconditions - Values were transmitted previously. - The values subject to complaint are relevant for cancellation.
  2. ### Results For values relevant to cancellation, the values can be transmitted again.
  3. ### Trigger - Check result from the complaint provides for cancellation or - a value transmitted to the market by mistake has to be cancelled.
  4. ### First message **MSB (corresponds to MSB at the market location object)** sends “Cancellation to LF” (step 2). From this point on, the party on this page is next to act.
  5. ### Objective Cancellation of transmitted values at all parties involved.
## 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/202610/NB/WiM-Teil2-stornierung-werte-vom-msb-der-marktlokation) — NB - [View MSB-MALO](/en/prozessdoku/202610/MSB/WiM-Teil2-stornierung-werte-vom-msb-der-marktlokation) — MSB at the market location object · market role MSB - [View ÜNB](/en/prozessdoku/202610/UENB/WiM-Teil2-stornierung-werte-vom-msb-der-marktlokation) — ÜNB · market role UENB *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.*