# `IndicesUpdateAliasesRemoveIndexAction` [interface-IndicesUpdateAliasesRemoveIndexAction]

| Name | Type | Description |
| - | - | - |
| `index` | [IndexName](./IndexName.md) | Data stream or index for the action. Supports wildcards ( `*`). |
| `indices` | [Indices](./Indices.md) | Data streams or indices for the action. Supports wildcards ( `*`). |
| `must_exist` | boolean | If `true`, the alias must exist to perform the action. |