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17.10 Troubleshooting & Migration Labs

Lab 1 — BW object cannot be converted​

Investigate:

  • source release,
  • unsupported object,
  • dependency,
  • custom routine,
  • obsolete modeling construct.

Do not redesign before identifying the unsupported capability.

Lab 2 — Shell conversion succeeds but data is missing​

Expected behavior can be metadata-only.

Verify:

  • source connection,
  • initial load,
  • target persistence,
  • DTP,
  • reconciliation.

Lab 3 — Imported query gives different numbers​

Investigate:

  • filters,
  • variables,
  • restricted measures,
  • calculated measures,
  • currency,
  • unit,
  • aggregation,
  • authorizations,
  • source data.

Lab 4 — BW bridge object unavailable in Datasphere​

Check:

  • BW bridge space,
  • sharing,
  • permissions,
  • supported object type,
  • Datasphere space access,
  • lifecycle state.

Lab 5 — Migration is slower than BW/4HANA​

Compare:

  • source extraction,
  • transformation runtime,
  • target write throughput,
  • query design,
  • concurrency,
  • network,
  • semantic layer.

Do not assume cloud migration automatically improves runtime.

Lab 6 — Duplicate data after coexistence​

Map every copy:

source → BW bridge → Datasphere → semantic model.

Remove persistence that provides no explicit value.

Lab 7 — Delta mismatch​

Compare:

  • source delta state,
  • last successful load,
  • DTP/request state,
  • target commit,
  • failed packages,
  • reprocessing.

Lab 8 — Consumer breaks after cutover​

Classify:

  • technical interface change,
  • semantic change,
  • authorization change,
  • performance regression,
  • unsupported query feature.

Lab 9 — Failed cutover​

Trigger rollback using predefined criteria rather than subjective judgment.

Lab 10 — Architect review​

For a 2,000-object BW/4HANA landscape, produce:

  • inventory,
  • migration waves,
  • coexistence topology,
  • cutover model,
  • retirement strategy,
  • operating model.