Visual Rules for Targets
Every rule definition and edit writes RuleDefined or RuleRevised to the ledger. Because the rule lives next to the mapping it governs, an auditor can reproduce the exact transformation logic that was active at any historical point.
Magellan provides a visual editor for defining transformation and validation rules that apply to target elements in your mappings.
Business analysts can specify data type conversions, default values, concatenation rules, conditional logic, and validation constraints without writing code.
Rules are stored as metadata alongside the mapping, ensuring they travel with the mapping through version control, publishing, and export workflows.
For complex transformations that exceed the visual editor's capabilities, users can drop into expression‑based rules with full access to the mapping context.
Every rule definition writes a `RuleDefined` entry; every change writes `RuleRevised`. Both carry the canonical rule payload hash, so a regulator can prove that a given transformation was the one in force at a specific moment in time.
Audit ledger entries written by this feature
Each action in this feature appends one of the following entry types to the ULID‑keyed, SHA‑256 hash‑chained audit ledger. A reviewer can replay the chain to reconstruct exactly what happened, when, and under which role.
RuleDefinedRuleRevisedRuleValidationFailedRelated glossary terms
Definitions for the technical, regulatory, and standards terms referenced on this page. Each link opens the term in the full glossary.
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