diff --git a/java-client/src/main/java/co/elastic/clients/elasticsearch/doc-files/api-spec.html b/java-client/src/main/java/co/elastic/clients/elasticsearch/doc-files/api-spec.html
index 8cd083e6f..aa6264a0e 100644
--- a/java-client/src/main/java/co/elastic/clients/elasticsearch/doc-files/api-spec.html
+++ b/java-client/src/main/java/co/elastic/clients/elasticsearch/doc-files/api-spec.html
@@ -1747,45 +1747,46 @@
 'ingest._types.GrokProcessor': 'ingest/_types/Processors.ts#L950-L981',
 'ingest._types.GsubProcessor': 'ingest/_types/Processors.ts#L983-L1007',
 'ingest._types.HtmlStripProcessor': 'ingest/_types/Processors.ts#L1009-L1025',
-'ingest._types.InferenceConfig': 'ingest/_types/Processors.ts#L1048-L1060',
-'ingest._types.InferenceConfigClassification': 'ingest/_types/Processors.ts#L1075-L1101',
-'ingest._types.InferenceConfigRegression': 'ingest/_types/Processors.ts#L1062-L1073',
-'ingest._types.InferenceProcessor': 'ingest/_types/Processors.ts#L1027-L1046',
+'ingest._types.InferenceConfig': 'ingest/_types/Processors.ts#L1066-L1078',
+'ingest._types.InferenceConfigClassification': 'ingest/_types/Processors.ts#L1093-L1119',
+'ingest._types.InferenceConfigRegression': 'ingest/_types/Processors.ts#L1080-L1091',
+'ingest._types.InferenceProcessor': 'ingest/_types/Processors.ts#L1027-L1059',
 'ingest._types.Ingest': 'ingest/_types/Simulation.ts#L29-L37',
+'ingest._types.InputConfig': 'ingest/_types/Processors.ts#L1061-L1064',
 'ingest._types.IpLocationProcessor': 'ingest/_types/Processors.ts#L478-L512',
 'ingest._types.Ipinfo': 'ingest/_types/Database.ts#L59-L59',
-'ingest._types.JoinProcessor': 'ingest/_types/Processors.ts#L1103-L1118',
-'ingest._types.JsonProcessor': 'ingest/_types/Processors.ts#L1120-L1149',
-'ingest._types.JsonProcessorConflictStrategy': 'ingest/_types/Processors.ts#L1151-L1156',
-'ingest._types.KeyValueProcessor': 'ingest/_types/Processors.ts#L1158-L1210',
+'ingest._types.JoinProcessor': 'ingest/_types/Processors.ts#L1121-L1136',
+'ingest._types.JsonProcessor': 'ingest/_types/Processors.ts#L1138-L1167',
+'ingest._types.JsonProcessorConflictStrategy': 'ingest/_types/Processors.ts#L1169-L1174',
+'ingest._types.KeyValueProcessor': 'ingest/_types/Processors.ts#L1176-L1228',
 'ingest._types.Local': 'ingest/_types/Database.ts#L63-L65',
-'ingest._types.LowercaseProcessor': 'ingest/_types/Processors.ts#L1212-L1228',
+'ingest._types.LowercaseProcessor': 'ingest/_types/Processors.ts#L1230-L1246',
 'ingest._types.Maxmind': 'ingest/_types/Database.ts#L55-L57',
-'ingest._types.NetworkDirectionProcessor': 'ingest/_types/Processors.ts#L1230-L1264',
+'ingest._types.NetworkDirectionProcessor': 'ingest/_types/Processors.ts#L1248-L1282',
 'ingest._types.Pipeline': 'ingest/_types/Pipeline.ts#L23-L51',
 'ingest._types.PipelineConfig': 'ingest/_types/Pipeline.ts#L67-L81',
-'ingest._types.PipelineProcessor': 'ingest/_types/Processors.ts#L1266-L1277',
+'ingest._types.PipelineProcessor': 'ingest/_types/Processors.ts#L1284-L1295',
 'ingest._types.PipelineSimulation': 'ingest/_types/Simulation.ts#L52-L60',
 'ingest._types.ProcessorBase': 'ingest/_types/Processors.ts#L303-L326',
 'ingest._types.ProcessorContainer': 'ingest/_types/Processors.ts#L27-L301',
 'ingest._types.Redact': 'ingest/_types/Simulation.ts#L39-L44',
-'ingest._types.RedactProcessor': 'ingest/_types/Processors.ts#L1279-L1320',
-'ingest._types.RegisteredDomainProcessor': 'ingest/_types/Processors.ts#L1322-L1338',
-'ingest._types.RemoveProcessor': 'ingest/_types/Processors.ts#L1340-L1354',
-'ingest._types.RenameProcessor': 'ingest/_types/Processors.ts#L1356-L1372',
-'ingest._types.RerouteProcessor': 'ingest/_types/Processors.ts#L1374-L1402',
-'ingest._types.ScriptProcessor': 'ingest/_types/Processors.ts#L1404-L1424',
-'ingest._types.SetProcessor': 'ingest/_types/Processors.ts#L1426-L1460',
-'ingest._types.SetSecurityUserProcessor': 'ingest/_types/Processors.ts#L1462-L1471',
-'ingest._types.ShapeType': 'ingest/_types/Processors.ts#L1473-L1476',
+'ingest._types.RedactProcessor': 'ingest/_types/Processors.ts#L1297-L1338',
+'ingest._types.RegisteredDomainProcessor': 'ingest/_types/Processors.ts#L1340-L1356',
+'ingest._types.RemoveProcessor': 'ingest/_types/Processors.ts#L1358-L1372',
+'ingest._types.RenameProcessor': 'ingest/_types/Processors.ts#L1374-L1390',
+'ingest._types.RerouteProcessor': 'ingest/_types/Processors.ts#L1392-L1420',
+'ingest._types.ScriptProcessor': 'ingest/_types/Processors.ts#L1422-L1442',
+'ingest._types.SetProcessor': 'ingest/_types/Processors.ts#L1444-L1478',
+'ingest._types.SetSecurityUserProcessor': 'ingest/_types/Processors.ts#L1480-L1489',
+'ingest._types.ShapeType': 'ingest/_types/Processors.ts#L1491-L1494',
 'ingest._types.SimulateDocumentResult': 'ingest/_types/Simulation.ts#L46-L50',
-'ingest._types.SortProcessor': 'ingest/_types/Processors.ts#L1478-L1494',
-'ingest._types.SplitProcessor': 'ingest/_types/Processors.ts#L1496-L1521',
-'ingest._types.TerminateProcessor': 'ingest/_types/Processors.ts#L1523-L1523',
-'ingest._types.TrimProcessor': 'ingest/_types/Processors.ts#L1525-L1541',
-'ingest._types.UppercaseProcessor': 'ingest/_types/Processors.ts#L1543-L1559',
-'ingest._types.UriPartsProcessor': 'ingest/_types/Processors.ts#L1579-L1605',
-'ingest._types.UrlDecodeProcessor': 'ingest/_types/Processors.ts#L1561-L1577',
+'ingest._types.SortProcessor': 'ingest/_types/Processors.ts#L1496-L1512',
+'ingest._types.SplitProcessor': 'ingest/_types/Processors.ts#L1514-L1539',
+'ingest._types.TerminateProcessor': 'ingest/_types/Processors.ts#L1541-L1541',
+'ingest._types.TrimProcessor': 'ingest/_types/Processors.ts#L1543-L1559',
+'ingest._types.UppercaseProcessor': 'ingest/_types/Processors.ts#L1561-L1577',
+'ingest._types.UriPartsProcessor': 'ingest/_types/Processors.ts#L1597-L1623',
+'ingest._types.UrlDecodeProcessor': 'ingest/_types/Processors.ts#L1579-L1595',
 'ingest._types.UserAgentProcessor': 'ingest/_types/Processors.ts#L514-L545',
 'ingest._types.UserAgentProperty': 'ingest/_types/Processors.ts#L547-L553',
 'ingest._types.Web': 'ingest/_types/Database.ts#L61-L61',
@@ -3049,10 +3050,10 @@
         if (hash.length > 1) {
             hash = hash.substring(1);
         }
-        window.location = "https://github.com/elastic/elasticsearch-specification/tree/c623a5d20613557e3e5d63a7a32eb36b58ac92ec/specification/" + (paths[hash] || "");
+        window.location = "https://github.com/elastic/elasticsearch-specification/tree/d42bde26cc35dfaa40757f48306a3559ab8d4ea8/specification/" + (paths[hash] || "");
     </script>
 </head>
 <body>
-    Please see the <a href="https://github.com/elastic/elasticsearch-specification/tree/c623a5d20613557e3e5d63a7a32eb36b58ac92ec/specification/">Elasticsearch API specification</a>.
+    Please see the <a href="https://github.com/elastic/elasticsearch-specification/tree/d42bde26cc35dfaa40757f48306a3559ab8d4ea8/specification/">Elasticsearch API specification</a>.
 </body>
 </html>
diff --git a/java-client/src/main/java/co/elastic/clients/elasticsearch/ingest/InferenceProcessor.java b/java-client/src/main/java/co/elastic/clients/elasticsearch/ingest/InferenceProcessor.java
index 48de84447..7d733465e 100644
--- a/java-client/src/main/java/co/elastic/clients/elasticsearch/ingest/InferenceProcessor.java
+++ b/java-client/src/main/java/co/elastic/clients/elasticsearch/ingest/InferenceProcessor.java
@@ -28,7 +28,9 @@
 import co.elastic.clients.util.ApiTypeHelper;
 import co.elastic.clients.util.ObjectBuilder;
 import jakarta.json.stream.JsonGenerator;
+import java.lang.Boolean;
 import java.lang.String;
+import java.util.List;
 import java.util.Map;
 import java.util.Objects;
 import java.util.function.Function;
@@ -69,6 +71,11 @@ public class InferenceProcessor extends ProcessorBase implements ProcessorVarian
 	@Nullable
 	private final InferenceConfig inferenceConfig;
 
+	private final List<InputConfig> inputOutput;
+
+	@Nullable
+	private final Boolean ignoreMissing;
+
 	// ---------------------------------------------------------------------------------------------
 
 	private InferenceProcessor(Builder builder) {
@@ -78,6 +85,8 @@ private InferenceProcessor(Builder builder) {
 		this.targetField = builder.targetField;
 		this.fieldMap = ApiTypeHelper.unmodifiable(builder.fieldMap);
 		this.inferenceConfig = builder.inferenceConfig;
+		this.inputOutput = ApiTypeHelper.unmodifiable(builder.inputOutput);
+		this.ignoreMissing = builder.ignoreMissing;
 
 	}
 
@@ -134,6 +143,30 @@ public final InferenceConfig inferenceConfig() {
 		return this.inferenceConfig;
 	}
 
+	/**
+	 * Input fields for inference and output (destination) fields for the inference
+	 * results. This option is incompatible with the target_field and field_map
+	 * options.
+	 * <p>
+	 * API name: {@code input_output}
+	 */
+	public final List<InputConfig> inputOutput() {
+		return this.inputOutput;
+	}
+
+	/**
+	 * If true and any of the input fields defined in input_ouput are missing then
+	 * those missing fields are quietly ignored, otherwise a missing field causes a
+	 * failure. Only applies when using input_output configurations to explicitly
+	 * list the input fields.
+	 * <p>
+	 * API name: {@code ignore_missing}
+	 */
+	@Nullable
+	public final Boolean ignoreMissing() {
+		return this.ignoreMissing;
+	}
+
 	protected void serializeInternal(JsonGenerator generator, JsonpMapper mapper) {
 
 		super.serializeInternal(generator, mapper);
@@ -161,6 +194,21 @@ protected void serializeInternal(JsonGenerator generator, JsonpMapper mapper) {
 			this.inferenceConfig.serialize(generator, mapper);
 
 		}
+		if (ApiTypeHelper.isDefined(this.inputOutput)) {
+			generator.writeKey("input_output");
+			generator.writeStartArray();
+			for (InputConfig item0 : this.inputOutput) {
+				item0.serialize(generator, mapper);
+
+			}
+			generator.writeEnd();
+
+		}
+		if (this.ignoreMissing != null) {
+			generator.writeKey("ignore_missing");
+			generator.write(this.ignoreMissing);
+
+		}
 
 	}
 
@@ -184,6 +232,12 @@ public static class Builder extends ProcessorBase.AbstractBuilder<Builder>
 		@Nullable
 		private InferenceConfig inferenceConfig;
 
+		@Nullable
+		private List<InputConfig> inputOutput;
+
+		@Nullable
+		private Boolean ignoreMissing;
+
 		/**
 		 * Required - The ID or alias for the trained model, or the ID of the
 		 * deployment.
@@ -262,6 +316,60 @@ public final Builder inferenceConfig(InferenceConfigVariant value) {
 			return this;
 		}
 
+		/**
+		 * Input fields for inference and output (destination) fields for the inference
+		 * results. This option is incompatible with the target_field and field_map
+		 * options.
+		 * <p>
+		 * API name: {@code input_output}
+		 * <p>
+		 * Adds all elements of <code>list</code> to <code>inputOutput</code>.
+		 */
+		public final Builder inputOutput(List<InputConfig> list) {
+			this.inputOutput = _listAddAll(this.inputOutput, list);
+			return this;
+		}
+
+		/**
+		 * Input fields for inference and output (destination) fields for the inference
+		 * results. This option is incompatible with the target_field and field_map
+		 * options.
+		 * <p>
+		 * API name: {@code input_output}
+		 * <p>
+		 * Adds one or more values to <code>inputOutput</code>.
+		 */
+		public final Builder inputOutput(InputConfig value, InputConfig... values) {
+			this.inputOutput = _listAdd(this.inputOutput, value, values);
+			return this;
+		}
+
+		/**
+		 * Input fields for inference and output (destination) fields for the inference
+		 * results. This option is incompatible with the target_field and field_map
+		 * options.
+		 * <p>
+		 * API name: {@code input_output}
+		 * <p>
+		 * Adds a value to <code>inputOutput</code> using a builder lambda.
+		 */
+		public final Builder inputOutput(Function<InputConfig.Builder, ObjectBuilder<InputConfig>> fn) {
+			return inputOutput(fn.apply(new InputConfig.Builder()).build());
+		}
+
+		/**
+		 * If true and any of the input fields defined in input_ouput are missing then
+		 * those missing fields are quietly ignored, otherwise a missing field causes a
+		 * failure. Only applies when using input_output configurations to explicitly
+		 * list the input fields.
+		 * <p>
+		 * API name: {@code ignore_missing}
+		 */
+		public final Builder ignoreMissing(@Nullable Boolean value) {
+			this.ignoreMissing = value;
+			return this;
+		}
+
 		@Override
 		protected Builder self() {
 			return this;
@@ -294,6 +402,8 @@ protected static void setupInferenceProcessorDeserializer(ObjectDeserializer<Inf
 		op.add(Builder::targetField, JsonpDeserializer.stringDeserializer(), "target_field");
 		op.add(Builder::fieldMap, JsonpDeserializer.stringMapDeserializer(JsonData._DESERIALIZER), "field_map");
 		op.add(Builder::inferenceConfig, InferenceConfig._DESERIALIZER, "inference_config");
+		op.add(Builder::inputOutput, JsonpDeserializer.arrayDeserializer(InputConfig._DESERIALIZER), "input_output");
+		op.add(Builder::ignoreMissing, JsonpDeserializer.booleanDeserializer(), "ignore_missing");
 
 	}
 
diff --git a/java-client/src/main/java/co/elastic/clients/elasticsearch/ingest/InputConfig.java b/java-client/src/main/java/co/elastic/clients/elasticsearch/ingest/InputConfig.java
new file mode 100644
index 000000000..e98f14af2
--- /dev/null
+++ b/java-client/src/main/java/co/elastic/clients/elasticsearch/ingest/InputConfig.java
@@ -0,0 +1,177 @@
+/*
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package co.elastic.clients.elasticsearch.ingest;
+
+import co.elastic.clients.json.JsonpDeserializable;
+import co.elastic.clients.json.JsonpDeserializer;
+import co.elastic.clients.json.JsonpMapper;
+import co.elastic.clients.json.JsonpSerializable;
+import co.elastic.clients.json.JsonpUtils;
+import co.elastic.clients.json.ObjectBuilderDeserializer;
+import co.elastic.clients.json.ObjectDeserializer;
+import co.elastic.clients.util.ApiTypeHelper;
+import co.elastic.clients.util.ObjectBuilder;
+import co.elastic.clients.util.WithJsonObjectBuilderBase;
+import jakarta.json.stream.JsonGenerator;
+import java.lang.String;
+import java.util.Objects;
+import java.util.function.Function;
+import javax.annotation.Nullable;
+
+//----------------------------------------------------------------
+//       THIS CODE IS GENERATED. MANUAL EDITS WILL BE LOST.
+//----------------------------------------------------------------
+//
+// This code is generated from the Elasticsearch API specification
+// at https://github.com/elastic/elasticsearch-specification
+//
+// Manual updates to this file will be lost when the code is
+// re-generated.
+//
+// If you find a property that is missing or wrongly typed, please
+// open an issue or a PR on the API specification repository.
+//
+//----------------------------------------------------------------
+
+// typedef: ingest._types.InputConfig
+
+/**
+ *
+ * @see <a href="../doc-files/api-spec.html#ingest._types.InputConfig">API
+ *      specification</a>
+ */
+@JsonpDeserializable
+public class InputConfig implements JsonpSerializable {
+	private final String inputField;
+
+	private final String outputField;
+
+	// ---------------------------------------------------------------------------------------------
+
+	private InputConfig(Builder builder) {
+
+		this.inputField = ApiTypeHelper.requireNonNull(builder.inputField, this, "inputField");
+		this.outputField = ApiTypeHelper.requireNonNull(builder.outputField, this, "outputField");
+
+	}
+
+	public static InputConfig of(Function<Builder, ObjectBuilder<InputConfig>> fn) {
+		return fn.apply(new Builder()).build();
+	}
+
+	/**
+	 * Required - API name: {@code input_field}
+	 */
+	public final String inputField() {
+		return this.inputField;
+	}
+
+	/**
+	 * Required - API name: {@code output_field}
+	 */
+	public final String outputField() {
+		return this.outputField;
+	}
+
+	/**
+	 * Serialize this object to JSON.
+	 */
+	public void serialize(JsonGenerator generator, JsonpMapper mapper) {
+		generator.writeStartObject();
+		serializeInternal(generator, mapper);
+		generator.writeEnd();
+	}
+
+	protected void serializeInternal(JsonGenerator generator, JsonpMapper mapper) {
+
+		generator.writeKey("input_field");
+		generator.write(this.inputField);
+
+		generator.writeKey("output_field");
+		generator.write(this.outputField);
+
+	}
+
+	@Override
+	public String toString() {
+		return JsonpUtils.toString(this);
+	}
+
+	// ---------------------------------------------------------------------------------------------
+
+	/**
+	 * Builder for {@link InputConfig}.
+	 */
+
+	public static class Builder extends WithJsonObjectBuilderBase<Builder> implements ObjectBuilder<InputConfig> {
+		private String inputField;
+
+		private String outputField;
+
+		/**
+		 * Required - API name: {@code input_field}
+		 */
+		public final Builder inputField(String value) {
+			this.inputField = value;
+			return this;
+		}
+
+		/**
+		 * Required - API name: {@code output_field}
+		 */
+		public final Builder outputField(String value) {
+			this.outputField = value;
+			return this;
+		}
+
+		@Override
+		protected Builder self() {
+			return this;
+		}
+
+		/**
+		 * Builds a {@link InputConfig}.
+		 *
+		 * @throws NullPointerException
+		 *             if some of the required fields are null.
+		 */
+		public InputConfig build() {
+			_checkSingleUse();
+
+			return new InputConfig(this);
+		}
+	}
+
+	// ---------------------------------------------------------------------------------------------
+
+	/**
+	 * Json deserializer for {@link InputConfig}
+	 */
+	public static final JsonpDeserializer<InputConfig> _DESERIALIZER = ObjectBuilderDeserializer.lazy(Builder::new,
+			InputConfig::setupInputConfigDeserializer);
+
+	protected static void setupInputConfigDeserializer(ObjectDeserializer<InputConfig.Builder> op) {
+
+		op.add(Builder::inputField, JsonpDeserializer.stringDeserializer(), "input_field");
+		op.add(Builder::outputField, JsonpDeserializer.stringDeserializer(), "output_field");
+
+	}
+
+}