> ## Documentation Index
> Fetch the complete documentation index at: https://docs.fiddler.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# FieldMapping

> Maps dataset columns to span attribute keys per bucket.

## Attributes

<ResponseField name="inputs">
  Maps each `inputs` field name on the new dataset items to the stored
  span attribute key its value is copied from. Keys are matched exactly.
</ResponseField>

<ResponseField name="expected_outputs">
  Maps `expected_outputs` field names to stored span attribute keys.
</ResponseField>

<ResponseField name="metadata">
  Maps `metadata` field names to stored span attribute keys.
</ResponseField>

<ResponseField name="extras">
  Maps `extras` field names to stored span attribute keys.
</ResponseField>