{"record":{"id":"47b92d30a77d82fd","repo":"OpenAPITools/openapi-generator","slug":"empty-method-operation-name-operationid-not-allo-47b92d","errorCode":null,"errorMessage":"Empty method/operation name (operationId) not allowed","messagePattern":"Empty method/operation name \\(operationId\\) not allowed","errorType":"exception","errorClass":"RuntimeException","httpStatus":null,"severity":"error","filePath":"modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ElmClientCodegen.java","lineNumber":189,"sourceCode":"        return super.addMustacheLambdas()\n                .put(\"removeWhitespace\", new RemoveWhitespaceLambda());\n    }\n\n    @Override\n    public String escapeUnsafeCharacters(String input) {\n        return input.replace(\"*/\", \"*_/\").replace(\"/*\", \"/_*\");\n    }\n\n    @Override\n    public String escapeQuotationMark(String input) {\n        return input.replace(\"\\\"\", \"\");\n    }\n\n    @Override\n    public String toOperationId(String operationId) {\n        // throw exception if method name is empty\n        if (StringUtils.isEmpty(operationId)) {\n            throw new RuntimeException(\"Empty method/operation name (operationId) not allowed\");\n        }\n\n        operationId = camelize(sanitizeName(operationId), LOWERCASE_FIRST_LETTER);\n\n        // method name cannot use reserved keyword, e.g. return\n        if (isReservedWord(operationId)) {\n            String newOperationId = camelize(\"call_\" + operationId, LOWERCASE_FIRST_LETTER);\n            LOGGER.warn(\"{} (reserved word) cannot be used as method name. Renamed to {}\", operationId, newOperationId);\n            return newOperationId;\n        }\n\n        // operationId starts with a number\n        if (operationId.matches(\"^\\\\d.*\")) {\n            LOGGER.warn(operationId + \" (starting with a number) cannot be used as method sname. Renamed to \" + camelize(\"call_\" + operationId), true);\n            operationId = camelize(\"call_\" + operationId, LOWERCASE_FIRST_LETTER);\n        }\n\n        return operationId;","sourceCodeStart":171,"sourceCodeEnd":207,"githubUrl":"https://github.com/OpenAPITools/openapi-generator/blob/fcec517be3cf5b7964296bcba25fbc97541484e7/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ElmClientCodegen.java#L171-L207","documentation":"Error \"Empty method/operation name (operationId) not allowed\" thrown in OpenAPITools/openapi-generator.","triggerScenarios":"Thrown when an operation in the OpenAPI spec has an empty or missing operationId while generating an Elm client. Provide a non-empty operationId for every operation.","commonSituations":"See trigger scenarios.","solutions":["Provide a non-empty operationId for every operation in the OpenAPI spec."],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"fcec517be3cf5b7964296bcba25fbc97541484e7","analyzedAt":"2026-08-22T11:13:11.613Z","schemaVersion":2},"datasetVersion":"2026-08-22T14:17:55.899Z"}