ErrLookup › microsoft/semantic-kernel
microsoft/semantic-kernel
Integrate cutting-edge LLM technology quickly and easily into your apps · C# · 2,319 source files
Analyzed at ca40aa7226 on 2026-09-20. 1018 documented errors.
| Code / Message | Type | Severity | Tags |
|---|---|---|---|
| This index (of type ) requires training, which is not… | exception | error | faiss, vector-store, index-training, embeddings |
| Payload parameters cannot be retrieved from the | exception | error | openapi, payload, rest-operation, parameter |
| Image content URI is empty. | exception | warning | google, gemini, dead-code, image-content, code-smell |
| An orchestration is referencing a node with Id | validation | error | workflow, process-framework, validation, orchestration, declarative |
| No API key or Azure AD token available for ephemeral token… | exception | error | azure-openai, realtime, webrtc, authentication, ephemeral-token |
| vectorIndexes cannot be null or empty in the… | validation | error | azure-cosmosdb, vector-search, configuration, validation, python |
| Hybrid search requires 'keyword_field_name' in options. | exception | error | azure-cosmos-db, vector-search, configuration, hybrid-search |
| Unable to transform output to | exception | error | orchestration, transforms, serialization, typing, dotnet |
| AIContextProviders with AIFunctions are not supported when… | exception | error | kernel, plugins, configuration, responses-api, agents |
| Distance function is not supported for index kind . | exception | warning | faiss, vector-store, configuration, distance-function, defensive |
| Type is not allowed in bedrock function parameter type… | exception | error | bedrock, schema, function-calling, type-validation, action-group |
| Function ' ' is only supported as a method call in filter… | exception | error | in-memory, filter, ast |
| Configuration not found, please setup the notebooks first… | exception | error | configuration, csharp, notebooks, semantic-kernel, file-not-found |
INTERNAL_ERROR Function returned no result | error_code | error | mcp, kernel-function, tool-result, semantic-kernel |
| Please provide a token endpoint to retrieve the… | exception | error | azure, azure-openai, authentication, configuration, python |
| Invalid vectors, cannot compute cosine similarity scoresfor… | exception | error | chroma, cosine-similarity, vector, validation, python |
| Return type not found. Please use `None` as the type hint… | exception | error | event-handler, type-hints, decorator, assertion, startup |
| The message could not be added to the thread due to an… | exception | error | network, openai, agents, agentchat, service-error, channel |
| Please provide an endpoint or a base_url | exception | error | azure-openai, configuration, endpoint, env-vars, service-initialization |
| AST node type ' ' is not supported during filter evaluation. | exception | error | in-memory, filter, ast, sandbox |
| Error: missing Azure AI Search client credentials. | exception | error | authentication, configuration, azure-ai-search, startup |
| Response is not available. | exception | error | json, deserialization, http, evaluation, quality-check |
| Error: self._search_index_client not set 1. | exception | error | azure-cognitive-search, initialization, defensive-guard, semantic-kernel |
| Neither of the media types of | exception | error | openapi, dotnet, media-type, configuration |
| Failed to parse response | exception | error | json, deserialization, orchestration, group-chat, llm-response, agents |
| Unsupported service type | exception | error | bedrock, embeddings, internal, csharp |
| Call target node type | exception | error | filter, in-memory, security, semantic-kernel, evaluation |
| AzureAI project client not found. | exception | error | azureai, configuration, dependency-injection, agent, startup |
| Configuration key ' : ' not found | exception | critical | configuration, application-insights, telemetry, tracing, configuration-not-found, startup |
| Invalid input message type | validation | error | orchestration, type-mismatch, message-transform, semantic-kernel |
| The operation path resolves to | exception | critical | openapi, ssrf, rest-operation, security, server-url |
| Run failed with status | exception | error | openai-responses, agent, api-failure, model-limit |
| The process state manager is not initialized. | exception | error | process-framework, state-management, initialization, edges |
| Failed to search the collection. | exception | error | mongodb, vector-store, search, execution-error, atlas-index |
| Failed to create collection | exception | error | redis, memory-store, create-collection, redisearch, service-response-exception, configuration |
| Invalid output message type | validation | error | orchestration, type-mismatch, message-transform, semantic-kernel |
| Failed to create OpenAI settings. | exception | error | azure-openai, realtime, pydantic, settings-validation, websocket |
| No searchable fields found for hybrid search. | exception | error | schema, azure-ai-search, hybrid-search, data-model |
| Unsupported operator | exception | error | mongodb, filter, lambda, ast, semantic-kernel |
| The connection string is missing. | exception | error | mongodb, configuration, connection-string, initialization, semantic-kernel |
| Agent type ' ' not registered. | exception | error | agent-registry, yaml, declarative-spec, semantic-kernel |
| not supported in Azure AI Search. | exception | error | schema, data-model, azure-ai-search, type-mapping |
| The OpenAI text model ID is required. | exception | error | openai, configuration, initialization, model-id, python |
| GeminiPart is invalid. One and only one property among… | exception | error | google, gemini, json, deserialization, validation, model-validation |
| The client does not support sampling. | exception | error | mcp, sampling, client-capabilities, initialization |
| This `RestApiParameter` instance is frozen and cannot be… | exception | error | openapi-plugin, immutability, semantic-kernel |
| Auto-invocation of tool calls may only be used with a… | exception | error | google-ai, function-calling, candidate-count, settings, auto-invocation |
| Distance function is not supported. | exception | error | chroma, vector-store, configuration, distance-function |
| Audio content URI is empty. | exception | info | gemini, audio, unreachable, concurrency |
| Only one `Always` handler is allowed in a group of event… | exception | error | semantic-kernel, process-framework, declarative, event-handlers, validation, possible-bug |
| Unsupported AST node | exception | error | mongodb, filter, lambda, ast, semantic-kernel |
| Error: Azure Cognitive Search credentials not set. | validation | error | azure-cognitive-search, credentials, defensive-guard, semantic-kernel |
| Error evaluating filter | exception | error | filter, in-memory, error-handling, semantic-kernel |
| The audio transcription format | validation | error | openai, audio-to-text, audio-transcription, format-mapping |
| This method is not implemented for CopilotStudioAgent… | exception | error | not-implemented, thread, copilot-studio |
| Agent with name is not of type . | exception | error | inprocess-runtime, typing, casting, agents, dotnet |
| Authentication failed; see logs for category and… | exception | critical | authentication, msal, copilot-studio, entra-id, initialization |
| Failed to search items. | exception | error | azure-cosmos-db, vector-search, runtime, network |
| The service version ' ' is not supported. | exception | error | azure-openai, versioning, configuration, notsupported |
| Unsupported Bing tool call type | exception | error | azure-ai, bing, tool-call, type-guard, semantic-kernel |
| A message targeting function | exception | error | dapr, process-runtime, function-routing, edge-configuration, semantic-kernel |
| Error: Azure Cognitive Search client not set. | validation | error | azure-cognitive-search, endpoint, defensive-guard, semantic-kernel |
| Field ' ' not in data model (storage property names are… | exception | error | mongodb, filter, data-model, lambda, semantic-kernel |
| model.id required when creating a new Azure AI agent | exception | error | configuration, agents, openai-assistant, declarative-spec, model-id |
| Function ' ' is not allowed in filter expressions. Allowed… | validation | error | in-memory-collection, filter, sandbox, allowlist, function-calls |
| Payload parameters cannot be retrieved from the | exception | error | openapi, rest-api, payload, request-body, semantic-kernel |
| Unable to create Azure AI tool definition because of… | exception | error | azureai, tool-definition, notsupported, agent-definition |
| No response from the agent. | exception | warning | bedrock, dead-code, unreachable, response-parsing, get-response |
| Unsupported content type | exception | error | mcp, content-conversion, serialization, function-execution |
| Audio content uri must be a string to a local file. | exception | error | openai, audio-to-text, type-validation, local-file, runtime |
| Copilot Studio did not return a conversation ID. | exception | error | service-error, copilot-studio, conversation, transient |
| WeaviateMemoryStore requires a URL or API key, or to use… | exception | error | weaviate, memory-store, initialization, config, deprecated |
| When using a multi-modal model, a template must be… | exception | error | onnx, multimodal, template, initialization |
| Ollama does not support function choice behavior of type… | exception | error | ollama, chat-completion, function-calling, tools, execution-settings, not-supported |
| Unable to transform result into | exception | error | orchestration, structured-output, serialization, chat-completion, dotnet |
| ImageContent in function result must contain binary data. | exception | error | google, gemini, image-content, function-calling, multimodal, validation |
| The ActivateAsync method for the KernelProcessStep could… | exception | error | dapr, process-runtime, reflection, activation, semantic-kernel |
| The operation path resolves to | exception | error | openapi, rest-api, security, ssrf, url, semantic-kernel |
| Function not found in plugin | exception | error | process-framework, step, kernel-function, plugin, configuration |
| Unexpected failure broadcasting to channel | exception | error | broadcast, multi-agent, channel, kernalexception, internal |
| Failed to create MongoDB Atlas settings. | exception | error | mongodb, vector-store, initialization, config, env, secrets |
| Path of persist directory is not set | exception | error | usearch, memory-store, initialization, persistence, config |
| The prompt execution settings must not have a response… | validation | error | semantic-kernel, magentic, structured-output, configuration, init |
| The target for the edge is not a function target. | exception | error | dapr, process-runtime, edge-target, external-events, semantic-kernel |
| Access to attribute ' ' is not allowed in filter… | exception | error | in-memory, filter, security, sandbox |
| Please provide valid MSGraph configuration in… | exception | critical | configuration, msgraph, authentication, samples |
| When used with number_of_responses, best_of controls the… | exception | error | openai, execution-settings, best-of, pydantic, semantic-kernel |
| An error occurred while applying the template | exception | error | onnx, chat-template, chat-history, semantic-kernel |
| Invalid AgentId key: ' '. Must only contain ASCII… | exception | error | agentid, validation, ascii, runtime, dotnet |
| Invalid index type supplied, should be a SearchIndex object. | exception | error | api-misuse, azure-ai-search, collection-creation, type-check |
| The value type ' ' of ' ' is not supported. | exception | error | openapi, dotnet, schema-default, configuration |
| Use of name ' ' is not allowed in filter expressions. | exception | error | in-memory, filter, ast |
| Response is not of type Response | exception | error | invocation, sdk-version, type-check |
| The Azure Text deployment name is required. | exception | error | azure-openai, text-completion, deprecated, deployment-name, env-vars |
| The DeepSeek model ID is required. | exception | error | configuration, env-vars, deepseek, openai-connector, semantic-kernel |
| Unsupported attribute chain root | exception | error | filter, odata, lambda-parser, azure-ai-search |
| An unexpected error occurred while getting search results. | exception | error | google-search, network, unexpected, parsing |
| Distance function is not supported. Supported distance… | exception | error | mongodb, vector-store, initialization, distance-function, config |
| The thread is not a Copilot Studio Agent thread. | exception | error | type-mismatch, thread, copilot-studio |
| Unsupported item type in User message while formatting chat… | exception | error | vertex-ai, chat-history, content-types, validation |