# Contract termination — LFA view ## Process flow from the perspective of the LF (LFA) \nSystem diagram: Kündigung — view of LF\n\n\nCustomer backend system\n\nMACO APP · LF (entspricht…\n\nMarket partner\n\n\n\n1. Kündigung\n\nLF (entspricht LFN)\n\nAS4\n44016\n\nCreate transaction\n\n\nCreate process data\n\nAPI\n\nLoad data for the check\n\n\n2 read APIs called\n\nAPI\nlisted at the step\n\nEBD check: G_0005_G_0006\nAblehnung / Zustimmung\nKündigung\n\n\nTrigger follow-up process:\n44017, 44018\n\n\nTriggered by incoming\nmessage: 44016\n\n\nLoad data for processing\n\n\n3 read APIs called\n\nAPI\nlisted at the step\n\n2. Antwort\n\n\nLF (entspricht LFN)\n\nAS4\n44018, 44017\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\n"} gesamt={"\nSequence diagram: Kündigung — view of LF\n\n\nBackend (customer)\n\n\nMACO APP · LF (entspricht…\n\n\nLF (entspricht LFN)\n\n\n1. Kündigung\nAS4 · PI 44016\n\nCreate transaction\nCreate process data\n\n2. Antwort\nAS4 · PI 44018, 44017 · E_3001\nE_3001 — Kündigung Gasliefervertrag prüfen\n\nUpdate transaction\nUpdate process data\n"} titel="LFA" /> ## Process steps ### Contract termination
**Check identifiers** - [44016](/en/schnittstellen/202610/pruefi/UTILMD_GAS/PI_44016) — Contract termination with the old supplier · AS4
**Flow**
  1. Message from **LF (corresponds to LFN)** · AS4
  2. **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.
  3. **Load data for the check** - [Read energy supply contract](/en/api/202610/backend-lesen/getenergysupplycontractbasic#energieliefervertrag-lesen) `GET /getEnergySupplyContractBasic` Try it - [Read market location](/en/api/202610/backend-lesen/getmarketlocationbasic#marktlokation-lesen) `GET /getMarketLocationBasic` Try it
  4. **Decision tree** - `44016` → `G_0005_G_0006` — Rejection / consent to contract termination
  5. **Trigger follow-up process** - [44017](/en/schnittstellen/202610/pruefi/UTILMD_GAS/PI_44017) — Confirmation of contract termination - [44018](/en/schnittstellen/202610/pruefi/UTILMD_GAS/PI_44018) — Rejection of contract termination After processing, the MACO APP starts the follow-up process itself; which of them runs depends on the result of the processing.
### Response
**Check identifiers** - [44018](/en/schnittstellen/202610/pruefi/UTILMD_GAS/PI_44018) — Rejection of contract termination · AS4 - [44017](/en/schnittstellen/202610/pruefi/UTILMD_GAS/PI_44017) — Confirmation of contract termination · AS4
**Flow**
  1. **Triggered by incoming message** - [44016](/en/schnittstellen/202610/pruefi/UTILMD_GAS/PI_44016) — Contract termination with the old supplier The MACO APP sends this message itself, as a follow-up process after this incoming message.
  2. **Load data for processing** - [Read energy supply contract](/en/api/202610/backend-lesen/getenergysupplycontractbasic#energieliefervertrag-lesen) `GET /getEnergySupplyContractBasic` Try it - [Read market location](/en/api/202610/backend-lesen/getmarketlocationbasic#marktlokation-lesen) `GET /getMarketLocationBasic` Try it - [Read balancing](/en/api/202610/backend-lesen/getaccountingbasic#bilanzierung-lesen) `GET /getAccountingBasic` Try it
  3. Message to **LF (corresponds to LFN)** · AS4
    **Response per decision tree** - `44018`, `44017` → [E_3001](/en/referenz/202610/ebd/E_3001) · Check contract termination of gas supply contract
  4. **Write endpoint** - Transaction updated — [Update process data](/en/api/202610/backend-schreiben-lf/updateprocessdata#prozessdaten-aktualiseren) `POST /updateProcessData` Try it out Updates the existing transaction in the backend once the message has been created.
Decision trees of this process | EBD | Name | |---|---| | [E_3001](/referenz/202610/ebd/E_3001) | Check contract termination of gas supply contract |
## Process information
  1. ### Trigger **Runs beforehand:** [Determination of the MaLo ID of the market location](/en/prozessdoku/202610/LF/GPKE-Teil2-ermittlung-der-malo-id-der-marktlokation) — these processes name the one shown here in their result.
  2. ### First message **LF (corresponds to LFN)** sends “Contract termination” (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 LFN](/en/prozessdoku/202610/LF--LFN/geli-gas-2-0-kundigung) — the receiving supplier · market role LF *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. ::: For the check identifiers of these steps there is no test case in the test data set; the »Try it out« button of the write interface therefore offers no body. Applies to: [1](#schritt-1), [2](#schritt-2)