# EditCustomUomInput

input type

Edit-input for a CustomUom. Every field optional, at least ONE required; supplied fields REPLACE, omitted fields are preserved (no clearing semantic yet). dimensionClass is NOT editable (immutable at birth, UM-a — changing the class breaks convertible-by-construction); factorToBase IS editable (a value, not an identity — its consuming slices add the reference gates).

## Fields

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

## Used by

- [updateCustomUom](/reference/custom-uom/updateCustomUom/)