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@@ -5,8 +5,8 @@
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++++
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A data stream consists of one or more _backing indices_. Backing indices are
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-<<index-hidden,hidden>>, automatically-generated indices used to store a
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-stream's documents.
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+<<index-hidden,hidden>>, auto-generated indices used to store a stream's
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+documents.
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image::images/data-streams/data-streams-diagram.svg[align="center"]
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@@ -78,10 +78,10 @@ You cannot add new documents to a stream's other backing indices, even by
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sending requests directly to the index. This means you cannot submit the
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following requests directly to any backing index except the write index:
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-* An <<docs-index_,Index API>> request with an
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+* An <<docs-index_,index API>> request with an
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<<docs-index-api-op_type,`op_type`>> of `create`. The `op_type` parameter
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defaults to `create` when adding new documents.
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-* A <<docs-bulk,Bulk API>> request using a `create` action
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+* A <<docs-bulk,bulk API>> request using a `create` action
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Because it's the only index capable of ingesting new documents, you cannot
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perform operations on a write index that might hinder indexing. These
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@@ -124,17 +124,17 @@ cannot send update or deletion requests for existing documents to a data stream.
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To update or delete specific documents in a data stream, submit one of the
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following requests to the backing index containing the document:
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-* An <<docs-index_,Index API>> request with an
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+* An <<docs-index_,index API>> request with an
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<<docs-index-api-op_type,`op_type`>> of `index`.
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These requests must include valid <<optimistic-concurrency-control,`if_seq_no`
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and `if_primary_term`>> arguments.
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-* A <<docs-bulk,Bulk API>> request using the `delete`, `index`, or `update`
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+* A <<docs-bulk,bulk API>> request using the `delete`, `index`, or `update`
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action. If the action type is `index`, the action must include valid
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<<bulk-optimistic-concurrency-control,`if_seq_no` and `if_primary_term`>>
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arguments.
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-* A <<docs-delete,Delete API>> request
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+* A <<docs-delete,delete API>> request
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TIP: If you need to frequently update or delete existing documents across
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multiple indices, we recommend using an <<indices-add-alias,index alias>> and
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James Rodewig