{"record":{"id":"0a523a00bc54590c","repo":"OpenAPITools/openapi-generator","slug":"empty-method-name-operationid-not-allowed-0a523a","errorCode":null,"errorMessage":"Empty method name (operationId) not allowed","messagePattern":"Empty method name \\(operationId\\) not allowed","errorType":"exception","errorClass":"RuntimeException","httpStatus":null,"severity":"error","filePath":"modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AndroidClientCodegen.java","lineNumber":402,"sourceCode":"            example = \"new \" + type + \"()\";\n        }\n\n        if (example == null) {\n            example = \"null\";\n        } else if (Boolean.TRUE.equals(p.isArray)) {\n            example = \"Arrays.asList(\" + example + \")\";\n        } else if (Boolean.TRUE.equals(p.isMap)) {\n            example = \"new HashMap()\";\n        }\n\n        p.example = example;\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 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        return operationId;\n    }\n\n    @Override\n    public void processOpts() {\n        super.processOpts();\n","sourceCodeStart":384,"sourceCodeEnd":420,"githubUrl":"https://github.com/OpenAPITools/openapi-generator/blob/fcec517be3cf5b7964296bcba25fbc97541484e7/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AndroidClientCodegen.java#L384-L420","documentation":"Error \"Empty method 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 Android 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; empty operationIds are not allowed."],"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"}