tool_use already blocks invalid JSON shapes, yet an APN lands in the wrong field. What kind of error is that?
Select an answer to reveal the explanation.
Short Explanation
The box was built right, but the APN got tossed in the wrong cubby—that's semantic, not syntax. Schemas stop bad shapes; they don't fix misfiled values.
Full Explanation
When tool_use already blocks invalid JSON shapes yet an assessor's parcel number (APN) lands in the wrong field, the failure is a semantic validation error distinct from schema syntax errors. Schema and tool_use enforcement guarantee structure—required keys, types, enums—but they do not guarantee that a correctly typed string was copied into the correct semantic slot. Misfiled APNs still validate as strings while poisoning parcel joins downstream. Treating the mistake as proof that tool_use schema enforcement never ran is false: malformed JSON would have been rejected; this output was well-formed and wrongly grounded. Calling it a syntax error that JSON Schema would always reject automatically is incorrect because wrong-field placement usually satisfies the schema. Claiming semantic placement mistakes are identical to malformed JSON collapses two remediation paths—retry with field-level feedback versus fix schema wiring—and muddies municipal validation design. Exam caveat: always separate syntactic validity from semantic correctness when designing extract pipelines for civic records. Operational check: add post-schema checks that verify APN format and cross-field consistency (for example, APN belongs with the parcel address block), and confirm wrong-cubby cases fail semantic gates even when JSON Schema passes.