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LangGraph · Error

InvalidUpdateError

InvalidUpdateError is raised when LangGraph receives an invalid set of updates for a channel. It can occur while Pregel applies channel updates at the end of a graph step.

Last updated

Since
v1.2

Syntax

InvalidUpdateError()

In-depth API docs are only for subscribers: parameters, examples, common mistakes and interview practice.

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  • BaseChannel.update
  • Pregel
  • INVALID_CONCURRENT_GRAPH_UPDATE
  • INVALID_GRAPH_NODE_RETURN_VALUE

Source: InvalidUpdateError | langgraph | LangChain Reference. Checked 2026-11-03.