{"record":{"id":"a9be2ee0c13463c1","repo":"elastic/elasticsearch","slug":"missing-required-field-script-for-bucket-selecto","errorCode":null,"errorMessage":"Missing required field [script] for bucket_selector aggregation [{reducerName}]","messagePattern":"Missing required field \\[script\\] for bucket_selector aggregation \\[(.+?)\\]","errorType":"validation","errorClass":"ParsingException","httpStatus":null,"severity":"error","filePath":"modules/aggregations/src/main/java/org/elasticsearch/aggregations/pipeline/BucketSelectorPipelineAggregationBuilder.java","lineNumber":164,"sourceCode":"                    throw new ParsingException(\n                        parser.getTokenLocation(),\n                        \"Unknown key for a \" + token + \" in [\" + reducerName + \"]: [\" + currentFieldName + \"].\"\n                    );\n                }\n            } else {\n                throw new ParsingException(parser.getTokenLocation(), \"Unexpected token \" + token + \" in [\" + reducerName + \"].\");\n            }\n        }\n\n        if (bucketsPathsMap == null) {\n            throw new ParsingException(\n                parser.getTokenLocation(),\n                \"Missing required field [\" + BUCKETS_PATH.getPreferredName() + \"] for bucket_selector aggregation [\" + reducerName + \"]\"\n            );\n        }\n\n        if (script == null) {\n            throw new ParsingException(\n                parser.getTokenLocation(),\n                \"Missing required field [\"\n                    + Script.SCRIPT_PARSE_FIELD.getPreferredName()\n                    + \"] for bucket_selector aggregation [\"\n                    + reducerName\n                    + \"]\"\n            );\n        }\n\n        BucketSelectorPipelineAggregationBuilder factory = new BucketSelectorPipelineAggregationBuilder(\n            reducerName,\n            bucketsPathsMap,\n            script\n        );\n        if (gapPolicy != null) {\n            factory.gapPolicy(gapPolicy);\n        }\n        return factory;","sourceCodeStart":146,"sourceCodeEnd":182,"githubUrl":"https://github.com/elastic/elasticsearch/blob/db6a809a667c081ca1dc7500389d26975573215f/modules/aggregations/src/main/java/org/elasticsearch/aggregations/pipeline/BucketSelectorPipelineAggregationBuilder.java#L146-L182","documentation":"Error \"Missing required field [script] for bucket_selector aggregation [{reducerName}]\" thrown in elastic/elasticsearch.","triggerScenarios":"Thrown at modules/aggregations/src/main/java/org/elasticsearch/aggregations/pipeline/BucketSelectorPipelineAggregationBuilder.java:164 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"analyzedSha":"db6a809a667c081ca1dc7500389d26975573215f","analyzedAt":"2026-08-12T01:39:14.192Z","schemaVersion":2},"datasetVersion":"2026-08-12T08:17:17.861Z"}