Tabular Mapper

Fields

Header, type, description, synonyms, and the critical flag — all in one place.

Add field

Add field

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Load sample data Import schema.json Start blank

Require any

At least one field from each group must exist in the output.

Add group

Reconcile (optional)

Split ONE source column into two directional fields. Signed mode uses the value's sign; direction mode uses a separate flag column.

signed / amount source field direction flag field (optional) negative → field positive → field negative flag values (comma, optional) positive flag values (comma, optional)

Leave signed empty to disable reconcile. The signed/direction fields are usually virtual (declare them in synonyms only, not as output fields).

Gated fields (optional)

AI/harvest guesses for these fields wait in a review queue instead of auto-learning. Use for sensitive fields (e.g. debit/credit).

AI system prompt (optional)

Override the AI matcher's system prompt for this schema. Leave blank to use the built-in default.