diff --git a/.generator/schemas/v2/openapi.yaml b/.generator/schemas/v2/openapi.yaml
index 73c6d673719..b8661d93ff7 100644
--- a/.generator/schemas/v2/openapi.yaml
+++ b/.generator/schemas/v2/openapi.yaml
@@ -39639,6 +39639,8 @@ components:
           $ref: '#/components/schemas/ObservabilityPipelineBufferOptionsDiskType'
         when_full:
           $ref: '#/components/schemas/ObservabilityPipelineBufferOptionsWhenFull'
+      required:
+      - max_size
       type: object
     ObservabilityPipelineElasticsearchDestination:
       description: 'The `elasticsearch` destination writes logs to an Elasticsearch
@@ -40892,6 +40894,8 @@ components:
           $ref: '#/components/schemas/ObservabilityPipelineBufferOptionsMemoryType'
         when_full:
           $ref: '#/components/schemas/ObservabilityPipelineBufferOptionsWhenFull'
+      required:
+      - max_size
       type: object
     ObservabilityPipelineMemoryBufferSizeOptions:
       description: Options for configuring a memory buffer by queue length.
@@ -40905,6 +40909,8 @@ components:
           $ref: '#/components/schemas/ObservabilityPipelineBufferOptionsMemoryType'
         when_full:
           $ref: '#/components/schemas/ObservabilityPipelineBufferOptionsWhenFull'
+      required:
+      - max_events
       type: object
     ObservabilityPipelineMetadataEntry:
       description: A custom metadata entry.
diff --git a/src/main/java/com/datadog/api/client/v2/model/ObservabilityPipelineDiskBufferOptions.java b/src/main/java/com/datadog/api/client/v2/model/ObservabilityPipelineDiskBufferOptions.java
index dfc587a3eec..b099f8de410 100644
--- a/src/main/java/com/datadog/api/client/v2/model/ObservabilityPipelineDiskBufferOptions.java
+++ b/src/main/java/com/datadog/api/client/v2/model/ObservabilityPipelineDiskBufferOptions.java
@@ -8,6 +8,7 @@
 
 import com.fasterxml.jackson.annotation.JsonAnyGetter;
 import com.fasterxml.jackson.annotation.JsonAnySetter;
+import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
@@ -37,6 +38,14 @@ public class ObservabilityPipelineDiskBufferOptions {
   private ObservabilityPipelineBufferOptionsWhenFull whenFull =
       ObservabilityPipelineBufferOptionsWhenFull.BLOCK;
 
+  public ObservabilityPipelineDiskBufferOptions() {}
+
+  @JsonCreator
+  public ObservabilityPipelineDiskBufferOptions(
+      @JsonProperty(required = true, value = JSON_PROPERTY_MAX_SIZE) Long maxSize) {
+    this.maxSize = maxSize;
+  }
+
   public ObservabilityPipelineDiskBufferOptions maxSize(Long maxSize) {
     this.maxSize = maxSize;
     return this;
@@ -47,9 +56,8 @@ public ObservabilityPipelineDiskBufferOptions maxSize(Long maxSize) {
    *
    * @return maxSize
    */
-  @jakarta.annotation.Nullable
   @JsonProperty(JSON_PROPERTY_MAX_SIZE)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  @JsonInclude(value = JsonInclude.Include.ALWAYS)
   public Long getMaxSize() {
     return maxSize;
   }
diff --git a/src/main/java/com/datadog/api/client/v2/model/ObservabilityPipelineMemoryBufferOptions.java b/src/main/java/com/datadog/api/client/v2/model/ObservabilityPipelineMemoryBufferOptions.java
index 2eb6c01f571..9698a0b9d91 100644
--- a/src/main/java/com/datadog/api/client/v2/model/ObservabilityPipelineMemoryBufferOptions.java
+++ b/src/main/java/com/datadog/api/client/v2/model/ObservabilityPipelineMemoryBufferOptions.java
@@ -8,6 +8,7 @@
 
 import com.fasterxml.jackson.annotation.JsonAnyGetter;
 import com.fasterxml.jackson.annotation.JsonAnySetter;
+import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
@@ -37,6 +38,14 @@ public class ObservabilityPipelineMemoryBufferOptions {
   private ObservabilityPipelineBufferOptionsWhenFull whenFull =
       ObservabilityPipelineBufferOptionsWhenFull.BLOCK;
 
+  public ObservabilityPipelineMemoryBufferOptions() {}
+
+  @JsonCreator
+  public ObservabilityPipelineMemoryBufferOptions(
+      @JsonProperty(required = true, value = JSON_PROPERTY_MAX_SIZE) Long maxSize) {
+    this.maxSize = maxSize;
+  }
+
   public ObservabilityPipelineMemoryBufferOptions maxSize(Long maxSize) {
     this.maxSize = maxSize;
     return this;
@@ -47,9 +56,8 @@ public ObservabilityPipelineMemoryBufferOptions maxSize(Long maxSize) {
    *
    * @return maxSize
    */
-  @jakarta.annotation.Nullable
   @JsonProperty(JSON_PROPERTY_MAX_SIZE)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  @JsonInclude(value = JsonInclude.Include.ALWAYS)
   public Long getMaxSize() {
     return maxSize;
   }
diff --git a/src/main/java/com/datadog/api/client/v2/model/ObservabilityPipelineMemoryBufferSizeOptions.java b/src/main/java/com/datadog/api/client/v2/model/ObservabilityPipelineMemoryBufferSizeOptions.java
index 390278052cf..5525bc321d0 100644
--- a/src/main/java/com/datadog/api/client/v2/model/ObservabilityPipelineMemoryBufferSizeOptions.java
+++ b/src/main/java/com/datadog/api/client/v2/model/ObservabilityPipelineMemoryBufferSizeOptions.java
@@ -8,6 +8,7 @@
 
 import com.fasterxml.jackson.annotation.JsonAnyGetter;
 import com.fasterxml.jackson.annotation.JsonAnySetter;
+import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
@@ -37,6 +38,14 @@ public class ObservabilityPipelineMemoryBufferSizeOptions {
   private ObservabilityPipelineBufferOptionsWhenFull whenFull =
       ObservabilityPipelineBufferOptionsWhenFull.BLOCK;
 
+  public ObservabilityPipelineMemoryBufferSizeOptions() {}
+
+  @JsonCreator
+  public ObservabilityPipelineMemoryBufferSizeOptions(
+      @JsonProperty(required = true, value = JSON_PROPERTY_MAX_EVENTS) Long maxEvents) {
+    this.maxEvents = maxEvents;
+  }
+
   public ObservabilityPipelineMemoryBufferSizeOptions maxEvents(Long maxEvents) {
     this.maxEvents = maxEvents;
     return this;
@@ -47,9 +56,8 @@ public ObservabilityPipelineMemoryBufferSizeOptions maxEvents(Long maxEvents) {
    *
    * @return maxEvents
    */
-  @jakarta.annotation.Nullable
   @JsonProperty(JSON_PROPERTY_MAX_EVENTS)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  @JsonInclude(value = JsonInclude.Include.ALWAYS)
   public Long getMaxEvents() {
     return maxEvents;
   }