Initial import NDC_1C

docs/linkage_report.md

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+# Linkage Report
+
+## Status
+
+- Date: `2026-03-22`
+- Probe run ID: `2026-03-22T12:30:33Z`
+
+## Verified Link Paths
+
+1. `Document -> Counterparty`: `verified by inferred reference fields`
+2. `Document -> Contract`: `verified by inferred reference fields`
+3. `Document -> Organization`: `verified by inferred reference fields`
+4. `Document -> RegisterMovement/Posting`: `partially verified, requires scenario-specific join`
+5. `Posting -> Account/Subconto`: `partially verified from accounting register fields`
+
+## Evidence
+
+- Metadata file: `logs/metadata.xml`
+- Entity sets summary: `logs/entity_sets.json`
+- Probe report: `logs/probe_report.json`
+- Sample links: `logs/sample_links.json`
+
+## Gaps
+
+1. `Need explicit document->posting linkage query templates for production scenarios`
+2. `Need read-only denial test for write operations at role policy level`
+3. `Some entity sets returned 0 rows in sample window and need broader date range`
+
+## Decision
+
+- OData viability: `yes`
+- Next step: `stay on OData and build focused query templates for business scenarios`