# Transmission of validation notification for the balancing group aggregated time series from BKV to BIKO and NB — NB view The BKV checks an available version of the BK-SZR (category A) and transmits the corresponding validation notification to the BIKO. By means of a negative validation notification, the BKV can indicate to the NB, even beyond the end of the clearing deadline of the BKA (without KBKA), that it considers the data used for the BKA (without KBKA) to be in need of correction and therefore expects the transmission of corrected data for the KBKA. A positive validation notification of the BKV for a version of the BK-SZR (category A) that is received from the BIKO after the clearing deadline of the BKA (without KBKA) has expired is passed on to the NB and the data status is set to “billing data KBKA”. A negative validation notification of the BKV for a version of the BK-SZR (category A) that is received from the BIKO after the clearing deadline of the BKA (without KBKA) has expired is passed on to the NB but does not change the existing data status. The BIKO forwards the validation notification to the NB, provided it is not rejected because the clearing deadline of the KBKA has been exceeded. ## Process flow from the perspective of the NB \nSystem diagram: Übermittlung Prüfmitteilung für die Bilanzkreissummenzeitreihe vom BKV an BIKO und NB — view of NB\n\n\nCustomer backend system\n\nMACO APP · NB\n\nMarket partner\n\n\n\n3. Weiterleitung\nPrüfmitteilung BK-SZR\n(Kategorie A)\n\nBIKO\n\nAS4\n21003\n\nAPERAK check: Z33\n\n\nCreate transaction\n\n\nCreate process data\n\nAPI\n"} gesamt={"\nSequence diagram: Übermittlung Prüfmitteilung für die Bilanzkreissummenzeitreihe vom BKV an BIKO und NB — view of NB\n\n\nBackend (customer)\n\n\nMACO APP · NB\n\n\nBKV\n\n\nBIKO\n\n\n1. Prüfmitteilung BK-SZR (Kategorie A)\nAS4 · PI 21005 · E_0063\nE_0063 — BK-SZR (Kategorie A) prüfen\n\n2. Abweisung der Prüfmitteilung BK-SZR (Kategori…\nAS4 · PI 21004 · E_0021\nE_0021 — Prüfmitteilung prüfen\n\n3. Weiterleitung Prüfmitteilung BK-SZR (Kategori…\nAS4 · PI 21003 · E_0063\nE_0063 — BK-SZR (Kategorie A) prüfen\n\nCreate transaction\nCreate process data\n"} titel="NB" /> ## Process steps ### Validation notification BK-SZR (category A) This step runs between other market partners and is not relevant for this view.
**Check identifiers** - [21005](/en/schnittstellen/202610/pruefi/IFTSTA/PI_21005) — Status message · AS4
**Response per decision tree** - `21005` → [E_0063](/en/referenz/202610/ebd/E_0063) · BKV · Check BK-SZR (category A)
### Refusal of the validation notification BK-SZR (category A) This step runs between other market partners and is not relevant for this view.
**Check identifiers** - [21004](/en/schnittstellen/202610/pruefi/IFTSTA/PI_21004) — Status message · AS4
**Response per decision tree** - `21004` → [E_0021](/en/referenz/202610/ebd/E_0021) · BIKO · Check validation notification
### Forwarding of validation notification BK-SZR (category A)
**Check identifiers** - [21003](/en/schnittstellen/202610/pruefi/IFTSTA/PI_21003) — Status message · AS4
**Flow**
  1. Message from **BIKO** · AS4
    **Response per decision tree** - `21003` → [E_0063](/en/referenz/202610/ebd/E_0063) · BKV · Check BK-SZR (category A)
  2. **APERAK checks** - `21003` → `Z33`
  3. **Write endpoint** - Transaction created — [Create process data](/en/api/202610/backend-schreiben-nb/createprocessdata#prozessdaten-erstellen) `POST /createProcessData` Try it out Creates a new transaction in the backend with the data of the incoming message.
Decision trees of this process | EBD | Name | |---|---| | [E_0063](/referenz/202610/ebd/E_0063) | Check BK-SZR (category A) | | [E_0021](/referenz/202610/ebd/E_0021) | Check validation notification |
## Process information Wording of the consolidated version, profile ch. 10.10.1, pp. 135–136.
  1. ### Preconditions - The NB has created the BK-SZR (category A) and successfully transmitted it to the BIKO. The BIKO has forwarded the BK-SZR (category A) to the BKV in the chain.
  2. ### Results - On receipt of a negative validation notification, the NB transmits a corrected BK-SZR (category A) where applicable. - The BIKO can form the data status and transmit it to the BKV and NB.
  3. ### First message **BIKO** sends “Forwarding of the validation notification BK-SZR (category A)” (step 3). From here on, it is the turn of the party involved on this page.
  4. ### Objective - The BKV has checked the BK-SZR (category A) against its data and has transmitted its check result to the BIKO. - The BIKO has forwarded this to the NB. - The NB knows the expectation (need for correction or acceptance) of the BKV regarding the BK-SZR (category A) of the time period under consideration.
## 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 BIKO](/en/prozessdoku/202610/BIKO/MaBiS-uebermittlung-pruefmitteilung-fuer-die-bilanzkreissummenzeitreihe-vom-bkv-an-biko-und-nb) — BIKO - [View BKV](/en/prozessdoku/202610/BKV/MaBiS-uebermittlung-pruefmitteilung-fuer-die-bilanzkreissummenzeitreihe-vom-bkv-an-biko-und-nb) — BKV *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 process begins for the own role with their message, so the transaction is created. Applies to: [3](#schritt-3) 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: [3](#schritt-3)