# `HL7v2.Type.ERL`
[🔗](https://github.com/Balneario-de-Cofrentes/hl7v2/blob/v3.10.1/lib/hl7v2/type/erl.ex#L1)

Error Location (ERL) -- HL7v2 composite data type.

Identifies the exact location of an error in a received message.

6 components:
1. Segment ID (ST)
2. Segment Sequence (NM)
3. Field Position (NM)
4. Component Number (NM)
5. Sub-Component Number (NM)
6. Source Table (ID)

# `t`

```elixir
@type t() :: %HL7v2.Type.ERL{
  component_number: HL7v2.Type.NM.t() | nil,
  field_position: HL7v2.Type.NM.t() | nil,
  segment_id: binary() | nil,
  segment_sequence: HL7v2.Type.NM.t() | nil,
  source_table: binary() | nil,
  sub_component_number: HL7v2.Type.NM.t() | nil
}
```

# `encode`

```elixir
@spec encode(t() | nil) :: list()
```

Encodes an ERL to a list of component strings.

## Examples

    iex> HL7v2.Type.ERL.encode(%HL7v2.Type.ERL{segment_id: "PID", segment_sequence: "1", field_position: "5"})
    ["PID", "1", "5"]

    iex> HL7v2.Type.ERL.encode(%HL7v2.Type.ERL{segment_id: "PID", segment_sequence: "1", field_position: "5", component_number: "2"})
    ["PID", "1", "5", "2"]

    iex> HL7v2.Type.ERL.encode(nil)
    []

# `parse`

```elixir
@spec parse(list()) :: t()
```

Parses an ERL from a list of components.

## Examples

    iex> HL7v2.Type.ERL.parse(["PID", "1", "5", "2", "1", "HL70001"])
    %HL7v2.Type.ERL{segment_id: "PID", segment_sequence: %HL7v2.Type.NM{value: "1", original: "1"}, field_position: %HL7v2.Type.NM{value: "5", original: "5"}, component_number: %HL7v2.Type.NM{value: "2", original: "2"}, sub_component_number: %HL7v2.Type.NM{value: "1", original: "1"}, source_table: "HL70001"}

    iex> HL7v2.Type.ERL.parse(["PID", "1", "5"])
    %HL7v2.Type.ERL{segment_id: "PID", segment_sequence: %HL7v2.Type.NM{value: "1", original: "1"}, field_position: %HL7v2.Type.NM{value: "5", original: "5"}}

    iex> HL7v2.Type.ERL.parse([])
    %HL7v2.Type.ERL{}

---

*Consult [api-reference.md](api-reference.md) for complete listing*