LDC-Q4004 — The predicate is not declared by the target package

What it means

Every predicate named in a question over a package must be declared by that package: conditions and return values are matched against its vocabulary. An undeclared name stops the question, and the engine suggests the declared names that look closest, so a typo is easy to spot.

Use a predicate the target package declares, or check the spelling against the suggestion in the message.

Example

LawQL

query q over "demo.diagnostics" { for x: Applicant; where resident(x); select nosuchpred(x); }

Fix

LawQL

from r in rules select r

Engine message

The engine reports this in its own wording:

Output

LDC-Q4004: predicate 'nosuchpred' is not declared by the target package.

Related

• Questions to the engine — the shape of a question over a package.
• LDC-Q4002 — when the condition itself is malformed.