# Restoration of grid connection use (reconnect) at the instruction of LF — View NB In accordance with the grid usage contract (supplier framework contract) concluded between the LF and the NB, the LF instructs the NB to restore the grid connection use at the named market location of the AN supplied by the LF without delay. The NB checks the conditions on site on the day of the reconnection and, where necessary, makes several attempts to restore the grid connection use. The NB informs the LF, where applicable the MSB and where applicable the ÜNB about the result of the reconnection order. ## Process flow from the perspective of the NB \nSystem diagram: Wiederherstellung der Anschlussnutzung (Entsperren) auf Anweisung des LF — view of NB\n\n\nCustomer backend system\n\nMACO APP · NB\n\nMarket partner\n\n\n\n1. Entsperrauftrag\n\nLF\n\nAS4\n17117\n\nLoad data for the incoming\ncheck\n\n\nMarktlokation lesen\n\nAPI\n\nAPERAK check: Z10, Z16,\nZ17, Z18\n\n\nCreate transaction\n\n\nCreate process data\n\nAPI\n\nEBD check: E_0497\nEntsperrauftrag prüfen\n\n\nTriggered by incoming\nmessage: 17115\n\n\n2. Antwort auf\nEntsperrauftrag\n\n\nLF\n\nAS4\n19116, 19117\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\n\nProcess trigger received\n\n\n2 alternative events\n\nAPI\n\nLoad data for processing\n\n\n2 read APIs called\n\nAPI\nlisted at the step\n\n3. Information über\nEntsperrauftrag\n\n\nMSB\n\nAS4\n21040\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\n\nProcess trigger received\n\n\n2 alternative events\n\nAPI\n\nLoad data for processing\n\n\n2 read APIs called\n\nAPI\nlisted at the step\n\n4. Ergebnis des\nEntsperrauftrags\n\n\nLF\n\nAS4\n21039\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\n\nProcess trigger received\n\n\n2 alternative events\n\nAPI\n\nLoad data for processing\n\n\n2 read APIs called\n\nAPI\nlisted at the step\n\n5. Ergebnis des\nEntsperrauftrags\n\n\nMSB\n\nAS4\n21039\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\n\nProcess trigger received\n\n\n2 alternative events\n\nAPI\n\nLoad data for processing\n\n\n2 read APIs called\n\nAPI\nlisted at the step\n\n6. Ergebnis des\nEntsperrauftrags\n\n\nÜNB\n\nAS4\n21039\n\nUpdate transaction\n\n\nUpdate process data\n\nAPI\n"} gesamt={"\nSequence diagram: Wiederherstellung der Anschlussnutzung (Entsperren) auf Anweisung des LF — view of NB\n\n\nBackend (customer)\n\n\nMACO APP · NB\n\n\nLF\n\n\nMSB\n\n\nÜNB\n\n\n1. Entsperrauftrag\nAS4 · PI 17117\n\nCreate transaction\nCreate process data\n\n2. Antwort auf Entsperrauftrag\nAS4 · PI 19116, 19117 · E_0497\nE_0497 — Entsperrauftrag prüfen\n\nUpdate transaction\nUpdate process data\n\n2 alternative events\nTrigger event\n\n3. Information über Entsperrauftrag\nAS4 · PI 21040\n\nUpdate transaction\nUpdate process data\n\n2 alternative events\nTrigger event\n\n4. Ergebnis des Entsperrauftrags\nAS4 · PI 21039 · E_0499\nE_0499 — Prüfen, ob Entsperrauftrag erfolgreich\n\nUpdate transaction\nUpdate process data\n\n2 alternative events\nTrigger event\n\n5. Ergebnis des Entsperrauftrags\nAS4 · PI 21039 · E_0499\nE_0499 — Prüfen, ob Entsperrauftrag erfolgreich\n\nUpdate transaction\nUpdate process data\n\n2 alternative events\nTrigger event\n\n6. Ergebnis des Entsperrauftrags\nAS4 · PI 21039 · E_0499\nE_0499 — Prüfen, ob Entsperrauftrag erfolgreich\n\nUpdate transaction\nUpdate process data\n"} titel="NB" /> ## Process steps ### Reconnection order
**Check identifiers** - [17117](/en/schnittstellen/202610/pruefi/ORDERS/PI_17117) — Reconnection order · AS4
**Flow**
  1. Message from **LF** · AS4
  2. **Load data for the incoming check** - [Read market location](/en/api/202610/backend-lesen/getmarketlocationbasic#marktlokation-lesen) `GET /getMarketLocationBasic` Try it
  3. **APERAK checks** - `17117` → `Z10` - `17117` → `Z16` - `17117` → `Z17` - `17117` → `Z18`
  4. **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.
  5. **Decision tree** - `17117` → [E_0497](/en/referenz/202610/ebd/E_0497) — Check reconnection order
### Response to reconnection order
**Check identifiers** - [19116](/en/schnittstellen/202610/pruefi/ORDRSP/PI_19116) — Confirmation of disconnection/reconnection order · AS4 - [19117](/en/schnittstellen/202610/pruefi/ORDRSP/PI_19117) — Rejection of disconnection/reconnection order · AS4
**Flow**
  1. **Triggered by incoming message** - [17115](/schnittstellen/202610/pruefi/ORDERS/PI_17115) The MACO APP sends this message itself, as a follow-up process after this incoming message.
  2. Message to **LF** · AS4
    **Response per decision tree** - `19116`, `19117` → [E_0497](/en/referenz/202610/ebd/E_0497) · NB · Check reconnection order
  3. **Write endpoint** - Transaction updated — [Update process data](/en/api/202610/backend-schreiben-nb/updateprocessdata#prozessdaten-aktualiseren) `POST /updateProcessData` Try it out Updates the existing transaction in the backend once the message has been created.
### Information on the reconnection order
**Check identifiers** - [21040](/en/schnittstellen/202610/pruefi/IFTSTA/PI_21040) — Reconnection order info · AS4
**Flow**
  1. **Process trigger** - [`START_AUFTRAGSSTATUS`](/en/api/202610/ausloeser-nb/start-auftragsstatus) \"\n ]\n }\n ]\n },\n \"transaktionsdaten\": {\n \"absender\": {\n \"rollencodenummer\": \"\"\n },\n \"empfaenger\": {\n \"rollencodenummer\": \"\"\n },\n \"sparte\": \"\"\n },\n \"zusatzdaten\": {\n \"eventname\": \"START_AUFTRAGSSTATUS\",\n \"prozessId\": \"\"\n }\n}"} security={[{"bearer": []}]}>Ausprobieren - [`START_WIEDERHERST_LB`](/en/api/202610/ausloeser-nb/start-wiederherst-lb) \"\n ]\n }\n ]\n },\n \"transaktionsdaten\": {\n \"absender\": {\n \"rollencodenummer\": \"\"\n },\n \"empfaenger\": {\n \"rollencodenummer\": \"\"\n },\n \"sparte\": \"\"\n },\n \"zusatzdaten\": {\n \"eventname\": \"START_WIEDERHERST_LB\",\n \"prozessId\": \"\"\n }\n}"} security={[{"bearer": []}]}>Ausprobieren The backend triggers this step with one of these events.
  2. **Load data for processing** - [Read market location](/en/api/202610/backend-lesen/getmarketlocationbasic#marktlokation-lesen) `GET /getMarketLocationBasic` Try it - `LESEN_STATUSMITTEILUNG_BASIS`
  3. Message to **MSB** · AS4
  4. **Write endpoint** - Transaction updated — [Update process data](/en/api/202610/backend-schreiben-nb/updateprocessdata#prozessdaten-aktualiseren) `POST /updateProcessData` Try it out Updates the existing transaction in the backend once the message has been created.
### Result of the reconnection order
**Check identifiers** - [21039](/en/schnittstellen/202610/pruefi/IFTSTA/PI_21039) — Order status (disconnect) · AS4
**Flow**
  1. **Process trigger** - [`START_AUFTRAGSSTATUS`](/en/api/202610/ausloeser-nb/start-auftragsstatus) \"\n ]\n }\n ]\n },\n \"transaktionsdaten\": {\n \"absender\": {\n \"rollencodenummer\": \"\"\n },\n \"empfaenger\": {\n \"rollencodenummer\": \"\"\n },\n \"sparte\": \"\"\n },\n \"zusatzdaten\": {\n \"eventname\": \"START_AUFTRAGSSTATUS\",\n \"prozessId\": \"\"\n }\n}"} security={[{"bearer": []}]}>Ausprobieren - [`START_WIEDERHERST_LB`](/en/api/202610/ausloeser-nb/start-wiederherst-lb) \"\n ]\n }\n ]\n },\n \"transaktionsdaten\": {\n \"absender\": {\n \"rollencodenummer\": \"\"\n },\n \"empfaenger\": {\n \"rollencodenummer\": \"\"\n },\n \"sparte\": \"\"\n },\n \"zusatzdaten\": {\n \"eventname\": \"START_WIEDERHERST_LB\",\n \"prozessId\": \"\"\n }\n}"} security={[{"bearer": []}]}>Ausprobieren The backend triggers this step with one of these events.
  2. **Load data for processing** - [Read market location](/en/api/202610/backend-lesen/getmarketlocationbasic#marktlokation-lesen) `GET /getMarketLocationBasic` Try it - `LESEN_STATUSMITTEILUNG_BASIS`
  3. Message to **LF** · AS4
    **Response per decision tree** - `21039` → [E_0499](/en/referenz/202610/ebd/E_0499) · NB · Check whether the reconnection order was successful
  4. **Write endpoint** - Transaction updated — [Update process data](/en/api/202610/backend-schreiben-nb/updateprocessdata#prozessdaten-aktualiseren) `POST /updateProcessData` Try it out Updates the existing transaction in the backend once the message has been created.
### Result of the reconnection order
**Check identifiers** - [21039](/en/schnittstellen/202610/pruefi/IFTSTA/PI_21039) — Order status (disconnect) · AS4
**Flow**
  1. **Process trigger** - [`START_AUFTRAGSSTATUS`](/en/api/202610/ausloeser-nb/start-auftragsstatus) \"\n ]\n }\n ]\n },\n \"transaktionsdaten\": {\n \"absender\": {\n \"rollencodenummer\": \"\"\n },\n \"empfaenger\": {\n \"rollencodenummer\": \"\"\n },\n \"sparte\": \"\"\n },\n \"zusatzdaten\": {\n \"eventname\": \"START_AUFTRAGSSTATUS\",\n \"prozessId\": \"\"\n }\n}"} security={[{"bearer": []}]}>Ausprobieren - [`START_WIEDERHERST_LB`](/en/api/202610/ausloeser-nb/start-wiederherst-lb) \"\n ]\n }\n ]\n },\n \"transaktionsdaten\": {\n \"absender\": {\n \"rollencodenummer\": \"\"\n },\n \"empfaenger\": {\n \"rollencodenummer\": \"\"\n },\n \"sparte\": \"\"\n },\n \"zusatzdaten\": {\n \"eventname\": \"START_WIEDERHERST_LB\",\n \"prozessId\": \"\"\n }\n}"} security={[{"bearer": []}]}>Ausprobieren The backend triggers this step with one of these events.
  2. **Load data for processing** - [Read market location](/en/api/202610/backend-lesen/getmarketlocationbasic#marktlokation-lesen) `GET /getMarketLocationBasic` Try it - `LESEN_STATUSMITTEILUNG_BASIS`
  3. Message to **MSB** · AS4
    **Response per decision tree** - `21039` → [E_0499](/en/referenz/202610/ebd/E_0499) · NB · Check whether the reconnection order was successful
  4. **Write endpoint** - Transaction updated — [Update process data](/en/api/202610/backend-schreiben-nb/updateprocessdata#prozessdaten-aktualiseren) `POST /updateProcessData` Try it out Updates the existing transaction in the backend once the message has been created.
### Result of the reconnection order
**Check identifiers** - [21039](/en/schnittstellen/202610/pruefi/IFTSTA/PI_21039) — Order status (disconnect) · AS4
**Flow**
  1. **Process trigger** - [`START_AUFTRAGSSTATUS`](/en/api/202610/ausloeser-nb/start-auftragsstatus) \"\n ]\n }\n ]\n },\n \"transaktionsdaten\": {\n \"absender\": {\n \"rollencodenummer\": \"\"\n },\n \"empfaenger\": {\n \"rollencodenummer\": \"\"\n },\n \"sparte\": \"\"\n },\n \"zusatzdaten\": {\n \"eventname\": \"START_AUFTRAGSSTATUS\",\n \"prozessId\": \"\"\n }\n}"} security={[{"bearer": []}]}>Ausprobieren - [`START_WIEDERHERST_LB`](/en/api/202610/ausloeser-nb/start-wiederherst-lb) \"\n ]\n }\n ]\n },\n \"transaktionsdaten\": {\n \"absender\": {\n \"rollencodenummer\": \"\"\n },\n \"empfaenger\": {\n \"rollencodenummer\": \"\"\n },\n \"sparte\": \"\"\n },\n \"zusatzdaten\": {\n \"eventname\": \"START_WIEDERHERST_LB\",\n \"prozessId\": \"\"\n }\n}"} security={[{"bearer": []}]}>Ausprobieren The backend triggers this step with one of these events.
  2. **Load data for processing** - [Read market location](/en/api/202610/backend-lesen/getmarketlocationbasic#marktlokation-lesen) `GET /getMarketLocationBasic` Try it - `LESEN_STATUSMITTEILUNG_BASIS`
  3. Message to **ÜNB** · AS4
    **Response per decision tree** - `21039` → [E_0499](/en/referenz/202610/ebd/E_0499) · NB · Check whether the reconnection order was successful
  4. **Write endpoint** - Transaction updated — [Update process data](/en/api/202610/backend-schreiben-nb/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_0497](/referenz/202610/ebd/E_0497) | Check reconnection order | | [E_0499](/referenz/202610/ebd/E_0499) | Check whether the reconnection order was successful |
## Process information Wording of the consolidated version, profile ch. 3.5.2.1, pp. 109–110.
  1. ### Preconditions - The disconnected market location is assigned to LF. - The grid connection use is interrupted by means of the use case „[Interruption of the grid connection use (disconnect) on the instruction of the LF](/en/prozessdoku/202610/NB/GPKE-Teil2-unterbrechung-der-anschlussnutzung-sperren-auf-anweisung-des-lf)“. It is therefore a consuming market location. - The costs of the reconnection are charged to the LF as part of the disconnection.
  2. ### Results The grid connection use via the affected market location is possible again.
  3. ### Error case #### Result in the error case - The grid connection use via the affected market location is still not possible. - LF and NB clarify the further procedure bilaterally; if necessary, the LF restarts the use case “Restoration of the grid connection use (reconnect) at the instruction of the LF”. #### Error cases The grid connection use is not interrupted by means of the use case “[Interruption of the grid connection use (disconnect) at the instruction of the LF](/en/prozessdoku/202610/NB/GPKE-Teil2-unterbrechung-der-anschlussnutzung-sperren-auf-anweisung-des-lf)”.
  4. ### Further requirements - The restoration of grid connection use at a start of supply is carried out via the use case "Restoration of grid connection use at start of supply". - The extent to which MSB participates in carrying out the reconnection depends on whether MSB has granted NB general consent to carry out the disconnection/reconnection and, if such consent has not been granted, on the content of the consent from process step 4 “Response to request” of the use case “[Interruption of grid connection use (disconnect) on the instruction of LF](/en/prozessdoku/202610/NB/GPKE-Teil2-unterbrechung-der-anschlussnutzung-sperren-auf-anweisung-des-lf)”. If the reconnection of the market location is carried out with the participation of MSB, these steps take place bilaterally outside this process standardisation. - Cancellations of a reconnection order are presented in the use case “[Cancelling the interruption and restoration of grid connection use on the instruction of LF](/en/prozessdoku/202610/NB/GPKE-Teil2-stornieren-der-unterbrechung-und-wiederherstellung-der-anschlussnutzung-auf-anweisung-des-lf)”. A successful cancellation of a reconnection order ends the use case described here.
  5. ### Trigger **Runs beforehand:** [Cancellation of the interruption and restoration of grid connection use on the instruction of the LF](/en/prozessdoku/202610/NB/GPKE-Teil2-stornieren-der-unterbrechung-und-wiederherstellung-der-anschlussnutzung-auf-anweisung-des-lf) — these processes name the one shown here in their result.
  6. ### First message **LF** sends “Reconnection order” (step 1). From here on, it is the turn of the party involved on this page.
  7. ### Objective The grid connection use via the affected market location is possible again.
## 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 LF](/en/prozessdoku/202610/LF/GPKE-Teil2-wiederherstellung-der-anschlussnutzung-entsperren-auf-anweisung-des-lf) — LF - [View MSB](/en/prozessdoku/202610/MSB/GPKE-Teil2-wiederherstellung-der-anschlussnutzung-entsperren-auf-anweisung-des-lf) — MSB - [View ÜNB](/en/prozessdoku/202610/UENB/GPKE-Teil2-wiederherstellung-der-anschlussnutzung-entsperren-auf-anweisung-des-lf) — 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.* 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: [3](#schritt-3), [4](#schritt-4), [5](#schritt-5), [6](#schritt-6) 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), [4](#schritt-4), [5](#schritt-5), [6](#schritt-6)