{"record":{"id":"d35f411a56e991bc","repo":"hibernate/hibernate-orm","slug":"unknown-discriminator-value-for","errorCode":null,"errorMessage":"Unknown discriminator value for {}: {}","messagePattern":"Unknown discriminator value for (.+?): (.+?)","errorType":"exception","errorClass":"HibernateException","httpStatus":null,"severity":"error","filePath":"hibernate-core/src/main/java/org/hibernate/metamodel/mapping/internal/UnifiedAnyDiscriminatorConverter.java","lineNumber":125,"sourceCode":"\t\t\t\t\treturn enumMatch;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tif ( implicitValueStrategy != null ) {\n\t\t\t\tfinal var entityMapping =\n\t\t\t\t\t\timplicitValueStrategy.toEntityMapping( relationalValue,\n\t\t\t\t\t\t\t\tdiscriminatorRole, mappingMetamodel );\n\t\t\t\tif ( entityMapping != null ) {\n\t\t\t\t\treturn register( DiscriminatorValue.of( relationalValue ), entityMapping );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tfinal var nonNullMatch = detailsByValue.get( NOT_NULL );\n\t\t\tif ( nonNullMatch != null ) {\n\t\t\t\treturn nonNullMatch;\n\t\t\t}\n\n\t\t\tthrow new HibernateException(\n\t\t\t\t\t\"Unknown discriminator value for \" + discriminatorRole.getFullPath() + \": \" + relationalValue );\n\t\t}\n\t}\n\n\tprivate Object enumValue(Enum<?> relationalEnum) {\n\t\tfinal var relationalJavaType = getRelationalJavaType();\n\t\tif ( relationalJavaType instanceof StringJavaType ) {\n\t\t\treturn relationalEnum.name();\n\t\t}\n\t\telse if ( relationalJavaType instanceof CharacterJavaType ) {\n\t\t\treturn relationalEnum.name().charAt( 0 );\n\t\t}\n\t\telse {\n\t\t\treturn relationalEnum.ordinal();\n\t\t}\n\t}\n\n\t@Override","sourceCodeStart":107,"sourceCodeEnd":143,"githubUrl":"https://github.com/hibernate/hibernate-orm/blob/fad1729dce015f908198d57a8d80274a30f905a5/hibernate-core/src/main/java/org/hibernate/metamodel/mapping/internal/UnifiedAnyDiscriminatorConverter.java#L107-L143","documentation":"Error \"Unknown discriminator value for {}: {}\" thrown in hibernate/hibernate-orm.","triggerScenarios":"Thrown when a discriminator value read for an @Any association has no matching registered entity mapping.","commonSituations":"See trigger scenarios.","solutions":["Register all discriminator values with their entity names on the any-mapping; fix stored values that match no registered discriminator."],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"fad1729dce015f908198d57a8d80274a30f905a5","analyzedAt":"2026-08-22T04:13:57.527Z","schemaVersion":2},"datasetVersion":"2026-08-22T09:17:25.309Z"}