# `IndicesSoftDeletes` [interface-IndicesSoftDeletes] | Name | Type | Description | | - | - | - | | `enabled` | boolean | Indicates whether soft deletes are enabled on the index. | | `retention_lease` | [IndicesRetentionLease](./IndicesRetentionLease.md) | The maximum period to retain a shard history retention lease before it is considered expired. Shard history retention leases ensure that soft deletes are retained during merges on the Lucene index. If a soft delete is merged away before it can be replicated to a follower the following process will fail due to incomplete history on the leader. |