# X_SEARCH_UNDECLARED

## Means

this entity has no searchable column

## Typical cause

a `matches` predicate on an entity whose columns declare no `.searchable()`, so there is no tsvector to match against. Raised where the STATEMENT would be built and not where the chain was written, because both drivers reach it: a search vector is derived from the entity's own columns, so there is nothing else the predicate could name and no vector to guess at. 500 and not a 4xx — nothing the caller sends changes the answer, and the repair is an edit to the entity

## Fix

`add .searchable() to a text() column of <entity>, then: x db gen "search <entity>"`

[Entity and database](/error-codes#entity-and-database)