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# MULTIPLE_SUBGRAPHS

You are calling subgraphs multiple times within a single LangGraph node with checkpointing enabled for each subgraph.

This is currently not allowed due to internal restrictions on how checkpoint namespacing for subgraphs works.

## Troubleshooting

The following may help resolve this error:

* If you don't need to interrupt/resume from a subgraph, pass `checkpointer=False` when compiling it like this: `.compile(checkpointer=False)`

* Don't imperatively call graphs multiple times in the same node, and instead use the [`Send`](/oss/python/langgraph/graph-api#send) API.

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