# EditFxRateInput

input type

Edit-input for a FxRate. Every field optional, at least ONE required; supplied fields REPLACE, omitted fields are preserved (no clearing semantic yet). The window/pair/mode/rate fields are NOT editable (wire-IMMUTABLE facts, supersede with a new window or doom a FUTURE record and re-create; the system splice trim is the ONE sanctioned endAt move).

## Fields

| Field | Type | Required | Notes |
| --- | --- | --- | --- |
| `caption` | [String](/types/#scalars) | no | No further notes. |

## Used by

- [updateFxRate](/reference/fx-rate/updateFxRate/)