# `BadMapError` [🔗](https://github.com/elixir-lang/elixir/blob/v1.20.1/lib/elixir/lib/exception.ex#L1460) An exception raised when a map is expected, but something else was given. For example: iex> value = "hello" iex> %{value | key: "value"} ** (BadMapError) expected a map, got: ... --- *Consult [api-reference.md](api-reference.md) for complete listing*