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LDC-E1356 — Question without an identifier

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# LDC-E1356 — Question without an identifier

## What it means

Every question carries an identifier: a short name, or a full
question address under the case. The identifier keys the answer —
without it, the result cannot be addressed, stored, or audited, so
the engine refuses the anonymous question before computing anything.

The repair is to name the question. A short name suffices; the full
address form pins it to the case explicitly.

## Example

```run
{"argv": ["ask", "$ROOT", "--query-id", "", "--query", "evaluate truth(sunny());"], "files": {"law.toml": "[package]\nname = \"demo.diagnostics\"\nversion = \"0.1.0\"\nlanguage = \"0.2\"\nnamespace = \"urn:law:demo:diagnostics\"\n\n[[cases]]\nname = \"Solo\"\npath = \"solo.lawcase\"\n", "package.law": "language \"law.core\" version \"0.2\";\npackage demo.diagnostics version \"0.1.0\";\nnamespace \"urn:law:demo:diagnostics\";\n", "solo.lawcase": "language \"law.core\" version \"0.2\";\npackage demo.diagnostics version \"0.1.0\";\nnamespace \"urn:law:demo:diagnostics\";\n\nrelation sunny() kind institutional;\n\ncase Solo {\n    context {\n        legal_time @2026-08-26;\n    }\n}\n", "law.lock": "{\n  \"dependencyEdges\": [],\n  \"languageSemantics\": \"law.core/0.2.0\",\n  \"lockVersion\": \"0.1\",\n  \"packages\": [],\n  \"resolutionHash\": \"sha256:be03238a8c67b8f0879522d90b0750732ba05663f96df91cea6118d0a84076b1\",\n  \"root\": {\n    \"contentHash\": \"sha256:f6ee452b5a1b1ea60601c67b78a639066f8bda6b184f379b80749633c387331f\",\n    \"name\": \"demo.diagnostics\",\n    \"namespace\": \"urn:law:demo:diagnostics\",\n    \"version\": \"0.1.0\"\n  }\n}\n"}, "expect": "LDC-E1356"}
```

## Fix

```run
{"argv": ["ask", "$ROOT", "--query-id", "Q", "--query", "evaluate truth(sunny());"], "files": {"law.toml": "[package]\nname = \"demo.diagnostics\"\nversion = \"0.1.0\"\nlanguage = \"0.2\"\nnamespace = \"urn:law:demo:diagnostics\"\n\n[[cases]]\nname = \"Solo\"\npath = \"solo.lawcase\"\n", "package.law": "language \"law.core\" version \"0.2\";\npackage demo.diagnostics version \"0.1.0\";\nnamespace \"urn:law:demo:diagnostics\";\n", "solo.lawcase": "language \"law.core\" version \"0.2\";\npackage demo.diagnostics version \"0.1.0\";\nnamespace \"urn:law:demo:diagnostics\";\n\nrelation sunny() kind institutional;\n\ncase Solo {\n    context {\n        legal_time @2026-08-26;\n    }\n}\n", "law.lock": "{\n  \"dependencyEdges\": [],\n  \"languageSemantics\": \"law.core/0.2.0\",\n  \"lockVersion\": \"0.1\",\n  \"packages\": [],\n  \"resolutionHash\": \"sha256:be03238a8c67b8f0879522d90b0750732ba05663f96df91cea6118d0a84076b1\",\n  \"root\": {\n    \"contentHash\": \"sha256:f6ee452b5a1b1ea60601c67b78a639066f8bda6b184f379b80749633c387331f\",\n    \"name\": \"demo.diagnostics\",\n    \"namespace\": \"urn:law:demo:diagnostics\",\n    \"version\": \"0.1.0\"\n  }\n}\n"}, "expect": null}
```

## Engine message

The engine reports this in its own wording:

```text
{"error":{"code":"LDC-E1356","message":"queryId is required: a short name or a full URN of the form urn:law:demo:diagnostics#case/Solo/query/<name> (§172)"}}
```

## Related

- [LDC-E1354](/diagnostics/LDC-E1354/) — a question with no registered case.
- [LDC-E1355](/diagnostics/LDC-E1355/) — a case-package root outside its composition.