Field notes on SAP Clean Core, ABAP modernization and the move to ABAP Cloud.https://lumivara.ca/en-cahttps://lumivara.ca/blog/already-on-s4hana-custom-code-not-done/https://lumivara.ca/blog/already-on-s4hana-custom-code-not-done/Going live on S/4HANA isn't the finish line for Clean Core — it's the start. Why converted systems drift out of compliance, and how continuous governance keeps every upgrade a non-event.Sat, 30 May 2026 00:00:00 GMTClean Cores4hanaclean-coregovernanceatchttps://lumivara.ca/blog/beat-the-2027-sap-deadline/https://lumivara.ca/blog/beat-the-2027-sap-deadline/SAP ECC mainstream maintenance ends in 2027. Here's a custom-code migration plan for small and mid-size teams that de-risks the move to S/4HANA — incrementally, without rewriting everything.Thu, 28 May 2026 00:00:00 GMTClean Cores4hanamigrationatcdeadlinehttps://lumivara.ca/blog/atc-findings-blocking-abap-cloud/https://lumivara.ca/blog/atc-findings-blocking-abap-cloud/The handful of code issues most likely to block your SAP cloud move — flagged by ATC, SAP's code-quality checker — and the official, upgrade-safe replacement for each.Wed, 20 May 2026 00:00:00 GMTClean Coreatcabap-cloudremediationhttps://lumivara.ca/blog/replace-bdc-with-rap/https://lumivara.ca/blog/replace-bdc-with-rap/Stop integrations breaking on every screen change. BDC screen-automation (CALL TRANSACTION, batch input) is brittle and not cloud-safe — here's a decision tree for replacing it with official APIs (BAPI, RAP or OData).Thu, 14 May 2026 00:00:00 GMTRAP & Fioribdcrapintegrationhttps://lumivara.ca/blog/fiori-app-in-an-afternoon/https://lumivara.ca/blog/fiori-app-in-an-afternoon/Give the business a modern web screen in hours, not months. Turn an old table-maintenance view or report into a Fiori app (SAP's modern web UI), scaffolded from the table on the modern stack (CDS, RAP).Fri, 08 May 2026 00:00:00 GMTPlaybooksfiorirapcdshttps://lumivara.ca/blog/baseline-atc-before-you-migrate/https://lumivara.ca/blog/baseline-atc-before-you-migrate/Make a stalled migration feel manageable. An ATC baseline (a snapshot from SAP's code-quality checker) turns an overwhelming wall of findings into a prioritized backlog you burn down at your own pace.Sat, 02 May 2026 00:00:00 GMTClean Coreatcgovernancemigrationhttps://lumivara.ca/blog/push-logic-down-to-hana/https://lumivara.ca/blog/push-logic-down-to-hana/The single biggest performance lever in S/4HANA is doing the work in the database. A practical guide to code pushdown with CDS and AMDP.Sun, 26 Apr 2026 00:00:00 GMTABAPcdsamdpperformancehttps://lumivara.ca/blog/sap-data-in-power-bi/https://lumivara.ca/blog/sap-data-in-power-bi/Stop emailing spreadsheets. A clean, governed way to give the business live SAP data in Power BI or Datasphere — built on released CDS and OData.Mon, 20 Apr 2026 00:00:00 GMTPlaybooksodataanalyticspower-bi