{"record":{"id":"47789045d4cca9c6","repo":"n8n-io/n8n","slug":"connection-type-inference-error","errorCode":"CONNECTION_TYPE_INFERENCE_ERROR","errorMessage":"${inferResult.error}","messagePattern":"\\$\\{inferResult\\.error\\}","errorType":"error_code","errorClass":"ConnectionError","httpStatus":null,"severity":"error","filePath":"packages/@n8n/ai-workflow-builder.ee/src/tools/connect-nodes.tool.ts","lineNumber":150,"sourceCode":"\t\t\t\tlogger?.debug(\n\t\t\t\t\t`Attempting to connect: ${matchedSourceNode.name} -> ${matchedTargetNode.name}`,\n\t\t\t\t);\n\n\t\t\t\tconst inferResult = inferConnectionType(\n\t\t\t\t\tmatchedSourceNode,\n\t\t\t\t\tmatchedTargetNode,\n\t\t\t\t\tsourceNodeType,\n\t\t\t\t\ttargetNodeType,\n\t\t\t\t);\n\n\t\t\t\tif (inferResult.error) {\n\t\t\t\t\tconst connectionError = new ConnectionError(inferResult.error, {\n\t\t\t\t\t\tfromNodeId: matchedSourceNode.id,\n\t\t\t\t\t\ttoNodeId: matchedTargetNode.id,\n\t\t\t\t\t});\n\t\t\t\t\tconst error = {\n\t\t\t\t\t\tmessage: connectionError.message,\n\t\t\t\t\t\tcode: 'CONNECTION_TYPE_INFERENCE_ERROR',\n\t\t\t\t\t\tdetails: {\n\t\t\t\t\t\t\tsourceNode: matchedSourceNode.name,\n\t\t\t\t\t\t\ttargetNode: matchedTargetNode.name,\n\t\t\t\t\t\t\tpossibleTypes: inferResult.possibleTypes,\n\t\t\t\t\t\t},\n\t\t\t\t\t};\n\t\t\t\t\treporter.error(error);\n\t\t\t\t\treturn createErrorResponse(config, error);\n\t\t\t\t}\n\n\t\t\t\tif (!inferResult.connectionType) {\n\t\t\t\t\tconst error = {\n\t\t\t\t\t\tmessage: 'Could not infer connection type',\n\t\t\t\t\t\tcode: 'CONNECTION_TYPE_INFERENCE_FAILED',\n\t\t\t\t\t\tdetails: {\n\t\t\t\t\t\t\tsourceNode: matchedSourceNode.name,\n\t\t\t\t\t\t\ttargetNode: matchedTargetNode.name,\n\t\t\t\t\t\t},","sourceCodeStart":132,"sourceCodeEnd":168,"githubUrl":"https://github.com/n8n-io/n8n/blob/5ac6606e81f67bb9534255570cd4e86fd8101eee/packages/@n8n/ai-workflow-builder.ee/src/tools/connect-nodes.tool.ts#L132-L168","documentation":"Error \"${inferResult.error}\" thrown in n8n-io/n8n.","triggerScenarios":"Thrown at packages/@n8n/ai-workflow-builder.ee/src/tools/connect-nodes.tool.ts:150 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"5ac6606e81f67bb9534255570cd4e86fd8101eee","analyzedAt":"2026-08-12T05:26:35.080Z","schemaVersion":2},"datasetVersion":"2026-08-12T13:17:24.610Z"}