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[8.x] Add restrictions for synthetic _source (backport #1622) #1640

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Jan 21, 2025
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[8.x] Add restrictions for synthetic _source (backport #1622) #1640

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22 changes: 13 additions & 9 deletions docs/en/ingest-management/data-streams.asciidoc
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Expand Up @@ -937,6 +937,7 @@ Refer to <<data-streams-pipelines>> to learn more.
* link:{ref}/mapping-source-field.html#synthetic-source[Synthetic `_source`]

These features can be enabled and disabled for {fleet}-managed data streams by using the index template API and a few key settings.
Note that in versions 8.17.0 and later, Synthetic `_source` requires an Enterprise license.

NOTE: If you are already making use of `@custom` component templates for ingest or retention customization (as shown for example in <<data-streams-ilm-tutorial,Tutorial: Customize data retention policies>>), exercise care to ensure you don't overwrite your customizations when making these requests.

Expand Down Expand Up @@ -1098,16 +1099,18 @@ For example, the following payload disables TSDS on `nginx.stubstatus`:
[source,json]
----
PUT _component_template/<NAME>@custom

{
"template": {
"mappings": {
"_source": {
"mode": "synthetic"
"settings": {
"index": {
"mapping": {
"source": {
"mode": "synthetic"
}
}
}
}
}

----

[discrete]
Expand All @@ -1117,11 +1120,12 @@ PUT _component_template/<NAME>@custom
[source,json]
----
PUT _component_template/<NAME>@custom

{
"template": {
"mappings": {
"_source": {}
"settings": {
"index": {
"mapping": {
"source": {"mode": "stored"}
}
}
}
}
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