diff --git a/oas_docs/output/kibana.serverless.yaml b/oas_docs/output/kibana.serverless.yaml
index 00e155de3b0ce..818f4a0bfe273 100644
--- a/oas_docs/output/kibana.serverless.yaml
+++ b/oas_docs/output/kibana.serverless.yaml
@@ -70921,6 +70921,18 @@ components:
                       - $ref: '#/components/schemas/SLOs_timeslice_metric_basic_metric_with_field'
                       - $ref: '#/components/schemas/SLOs_timeslice_metric_percentile_metric'
                       - $ref: '#/components/schemas/SLOs_timeslice_metric_doc_count_metric'
+                    discriminator:
+                      mapping:
+                        avg: '#/components/schemas/SLOs_timeslice_metric_basic_metric_with_field'
+                        cardinality: '#/components/schemas/SLOs_timeslice_metric_basic_metric_with_field'
+                        doc_count: '#/components/schemas/SLOs_timeslice_metric_doc_count_metric'
+                        last_value: '#/components/schemas/SLOs_timeslice_metric_basic_metric_with_field'
+                        max: '#/components/schemas/SLOs_timeslice_metric_basic_metric_with_field'
+                        min: '#/components/schemas/SLOs_timeslice_metric_basic_metric_with_field'
+                        percentile: '#/components/schemas/SLOs_timeslice_metric_percentile_metric'
+                        std_deviation: '#/components/schemas/SLOs_timeslice_metric_basic_metric_with_field'
+                        sum: '#/components/schemas/SLOs_timeslice_metric_basic_metric_with_field'
+                      propertyName: aggregation
                   type: array
                 threshold:
                   description: The threshold used to determine if the metric is a good slice or not.
diff --git a/oas_docs/output/kibana.yaml b/oas_docs/output/kibana.yaml
index b0b0ffa135723..e0a7108f4fdf2 100644
--- a/oas_docs/output/kibana.yaml
+++ b/oas_docs/output/kibana.yaml
@@ -80512,6 +80512,18 @@ components:
                       - $ref: '#/components/schemas/SLOs_timeslice_metric_basic_metric_with_field'
                       - $ref: '#/components/schemas/SLOs_timeslice_metric_percentile_metric'
                       - $ref: '#/components/schemas/SLOs_timeslice_metric_doc_count_metric'
+                    discriminator:
+                      mapping:
+                        avg: '#/components/schemas/SLOs_timeslice_metric_basic_metric_with_field'
+                        cardinality: '#/components/schemas/SLOs_timeslice_metric_basic_metric_with_field'
+                        doc_count: '#/components/schemas/SLOs_timeslice_metric_doc_count_metric'
+                        last_value: '#/components/schemas/SLOs_timeslice_metric_basic_metric_with_field'
+                        max: '#/components/schemas/SLOs_timeslice_metric_basic_metric_with_field'
+                        min: '#/components/schemas/SLOs_timeslice_metric_basic_metric_with_field'
+                        percentile: '#/components/schemas/SLOs_timeslice_metric_percentile_metric'
+                        std_deviation: '#/components/schemas/SLOs_timeslice_metric_basic_metric_with_field'
+                        sum: '#/components/schemas/SLOs_timeslice_metric_basic_metric_with_field'
+                      propertyName: aggregation
                   type: array
                 threshold:
                   description: The threshold used to determine if the metric is a good slice or not.
diff --git a/x-pack/solutions/observability/plugins/slo/docs/openapi/slo/bundled.json b/x-pack/solutions/observability/plugins/slo/docs/openapi/slo/bundled.json
index 656529c3eb55e..4c92310f929aa 100644
--- a/x-pack/solutions/observability/plugins/slo/docs/openapi/slo/bundled.json
+++ b/x-pack/solutions/observability/plugins/slo/docs/openapi/slo/bundled.json
@@ -1768,12 +1768,13 @@
           }
         }
       },
-      "timeslice_metric_basic_metric_with_field": {
-        "title": "Timeslice Metric Basic Metric with Field",
+      "timeslice_metric_percentile_metric": {
+        "title": "Timeslice Metric Percentile Metric",
         "required": [
           "name",
           "aggregation",
-          "field"
+          "field",
+          "percentile"
         ],
         "type": "object",
         "properties": {
@@ -1784,17 +1785,11 @@
             "pattern": "^[A-Z]$"
           },
           "aggregation": {
-            "description": "The aggregation type of the metric.",
+            "description": "The aggregation type of the metric. Only valid option is \"percentile\"",
             "type": "string",
-            "example": "sum",
+            "example": "percentile",
             "enum": [
-              "sum",
-              "avg",
-              "min",
-              "max",
-              "std_deviation",
-              "last_value",
-              "cardinality"
+              "percentile"
             ]
           },
           "field": {
@@ -1802,6 +1797,11 @@
             "type": "string",
             "example": "processor.processed"
           },
+          "percentile": {
+            "description": "The percentile value.",
+            "type": "number",
+            "example": 95
+          },
           "filter": {
             "description": "The filter to apply to the metric.",
             "type": "string",
@@ -1809,13 +1809,11 @@
           }
         }
       },
-      "timeslice_metric_percentile_metric": {
-        "title": "Timeslice Metric Percentile Metric",
+      "timeslice_metric_doc_count_metric": {
+        "title": "Timeslice Metric Doc Count Metric",
         "required": [
           "name",
-          "aggregation",
-          "field",
-          "percentile"
+          "aggregation"
         ],
         "type": "object",
         "properties": {
@@ -1826,23 +1824,13 @@
             "pattern": "^[A-Z]$"
           },
           "aggregation": {
-            "description": "The aggregation type of the metric. Only valid option is \"percentile\"",
+            "description": "The aggregation type of the metric. Only valid option is \"doc_count\"",
             "type": "string",
-            "example": "percentile",
+            "example": "doc_count",
             "enum": [
-              "percentile"
+              "doc_count"
             ]
           },
-          "field": {
-            "description": "The field of the metric.",
-            "type": "string",
-            "example": "processor.processed"
-          },
-          "percentile": {
-            "description": "The percentile value.",
-            "type": "number",
-            "example": 95
-          },
           "filter": {
             "description": "The filter to apply to the metric.",
             "type": "string",
@@ -1850,11 +1838,12 @@
           }
         }
       },
-      "timeslice_metric_doc_count_metric": {
-        "title": "Timeslice Metric Doc Count Metric",
+      "timeslice_metric_basic_metric_with_field": {
+        "title": "Timeslice Metric Basic Metric with Field",
         "required": [
           "name",
-          "aggregation"
+          "aggregation",
+          "field"
         ],
         "type": "object",
         "properties": {
@@ -1865,13 +1854,24 @@
             "pattern": "^[A-Z]$"
           },
           "aggregation": {
-            "description": "The aggregation type of the metric. Only valid option is \"doc_count\"",
+            "description": "The aggregation type of the metric.",
             "type": "string",
-            "example": "doc_count",
+            "example": "sum",
             "enum": [
-              "doc_count"
+              "sum",
+              "avg",
+              "min",
+              "max",
+              "std_deviation",
+              "last_value",
+              "cardinality"
             ]
           },
+          "field": {
+            "description": "The field of the metric.",
+            "type": "string",
+            "example": "processor.processed"
+          },
           "filter": {
             "description": "The filter to apply to the metric.",
             "type": "string",
@@ -1932,6 +1932,20 @@
                     "description": "List of metrics with their name, aggregation type, and field.",
                     "type": "array",
                     "items": {
+                      "discriminator": {
+                        "propertyName": "aggregation",
+                        "mapping": {
+                          "percentile": "#/components/schemas/timeslice_metric_percentile_metric",
+                          "doc_count": "#/components/schemas/timeslice_metric_doc_count_metric",
+                          "sum": "#/components/schemas/timeslice_metric_basic_metric_with_field",
+                          "avg": "#/components/schemas/timeslice_metric_basic_metric_with_field",
+                          "min": "#/components/schemas/timeslice_metric_basic_metric_with_field",
+                          "max": "#/components/schemas/timeslice_metric_basic_metric_with_field",
+                          "std_deviation": "#/components/schemas/timeslice_metric_basic_metric_with_field",
+                          "last_value": "#/components/schemas/timeslice_metric_basic_metric_with_field",
+                          "cardinality": "#/components/schemas/timeslice_metric_basic_metric_with_field"
+                        }
+                      },
                       "anyOf": [
                         {
                           "$ref": "#/components/schemas/timeslice_metric_basic_metric_with_field"
diff --git a/x-pack/solutions/observability/plugins/slo/docs/openapi/slo/bundled.yaml b/x-pack/solutions/observability/plugins/slo/docs/openapi/slo/bundled.yaml
index bbc2bb6849098..1953250d7b9bb 100644
--- a/x-pack/solutions/observability/plugins/slo/docs/openapi/slo/bundled.yaml
+++ b/x-pack/solutions/observability/plugins/slo/docs/openapi/slo/bundled.yaml
@@ -1170,12 +1170,13 @@ components:
           description: The type of indicator.
           type: string
           example: sli.histogram.custom
-    timeslice_metric_basic_metric_with_field:
-      title: Timeslice Metric Basic Metric with Field
+    timeslice_metric_percentile_metric:
+      title: Timeslice Metric Percentile Metric
       required:
         - name
         - aggregation
         - field
+        - percentile
       type: object
       properties:
         name:
@@ -1184,32 +1185,28 @@ components:
           example: A
           pattern: ^[A-Z]$
         aggregation:
-          description: The aggregation type of the metric.
+          description: The aggregation type of the metric. Only valid option is "percentile"
           type: string
-          example: sum
+          example: percentile
           enum:
-            - sum
-            - avg
-            - min
-            - max
-            - std_deviation
-            - last_value
-            - cardinality
+            - percentile
         field:
           description: The field of the metric.
           type: string
           example: processor.processed
+        percentile:
+          description: The percentile value.
+          type: number
+          example: 95
         filter:
           description: The filter to apply to the metric.
           type: string
           example: 'processor.outcome: "success"'
-    timeslice_metric_percentile_metric:
-      title: Timeslice Metric Percentile Metric
+    timeslice_metric_doc_count_metric:
+      title: Timeslice Metric Doc Count Metric
       required:
         - name
         - aggregation
-        - field
-        - percentile
       type: object
       properties:
         name:
@@ -1218,28 +1215,21 @@ components:
           example: A
           pattern: ^[A-Z]$
         aggregation:
-          description: The aggregation type of the metric. Only valid option is "percentile"
+          description: The aggregation type of the metric. Only valid option is "doc_count"
           type: string
-          example: percentile
+          example: doc_count
           enum:
-            - percentile
-        field:
-          description: The field of the metric.
-          type: string
-          example: processor.processed
-        percentile:
-          description: The percentile value.
-          type: number
-          example: 95
+            - doc_count
         filter:
           description: The filter to apply to the metric.
           type: string
           example: 'processor.outcome: "success"'
-    timeslice_metric_doc_count_metric:
-      title: Timeslice Metric Doc Count Metric
+    timeslice_metric_basic_metric_with_field:
+      title: Timeslice Metric Basic Metric with Field
       required:
         - name
         - aggregation
+        - field
       type: object
       properties:
         name:
@@ -1248,11 +1238,21 @@ components:
           example: A
           pattern: ^[A-Z]$
         aggregation:
-          description: The aggregation type of the metric. Only valid option is "doc_count"
+          description: The aggregation type of the metric.
           type: string
-          example: doc_count
+          example: sum
           enum:
-            - doc_count
+            - sum
+            - avg
+            - min
+            - max
+            - std_deviation
+            - last_value
+            - cardinality
+        field:
+          description: The field of the metric.
+          type: string
+          example: processor.processed
         filter:
           description: The filter to apply to the metric.
           type: string
@@ -1305,6 +1305,18 @@ components:
                   description: List of metrics with their name, aggregation type, and field.
                   type: array
                   items:
+                    discriminator:
+                      propertyName: aggregation
+                      mapping:
+                        percentile: '#/components/schemas/timeslice_metric_percentile_metric'
+                        doc_count: '#/components/schemas/timeslice_metric_doc_count_metric'
+                        sum: '#/components/schemas/timeslice_metric_basic_metric_with_field'
+                        avg: '#/components/schemas/timeslice_metric_basic_metric_with_field'
+                        min: '#/components/schemas/timeslice_metric_basic_metric_with_field'
+                        max: '#/components/schemas/timeslice_metric_basic_metric_with_field'
+                        std_deviation: '#/components/schemas/timeslice_metric_basic_metric_with_field'
+                        last_value: '#/components/schemas/timeslice_metric_basic_metric_with_field'
+                        cardinality: '#/components/schemas/timeslice_metric_basic_metric_with_field'
                     anyOf:
                       - $ref: '#/components/schemas/timeslice_metric_basic_metric_with_field'
                       - $ref: '#/components/schemas/timeslice_metric_percentile_metric'
diff --git a/x-pack/solutions/observability/plugins/slo/docs/openapi/slo/components/schemas/indicator_properties_timeslice_metric.yaml b/x-pack/solutions/observability/plugins/slo/docs/openapi/slo/components/schemas/indicator_properties_timeslice_metric.yaml
index 8102ec0a312e6..3fa308322e702 100644
--- a/x-pack/solutions/observability/plugins/slo/docs/openapi/slo/components/schemas/indicator_properties_timeslice_metric.yaml
+++ b/x-pack/solutions/observability/plugins/slo/docs/openapi/slo/components/schemas/indicator_properties_timeslice_metric.yaml
@@ -46,6 +46,18 @@ properties:
             description: List of metrics with their name, aggregation type, and field.
             type: array
             items:
+              discriminator:
+                propertyName: aggregation
+                mapping:
+                  percentile: './timeslice_metric_percentile_metric.yaml'
+                  doc_count: './timeslice_metric_doc_count_metric.yaml'
+                  sum: './timeslice_metric_basic_metric_with_field.yaml'
+                  avg: './timeslice_metric_basic_metric_with_field.yaml'
+                  min: './timeslice_metric_basic_metric_with_field.yaml'
+                  max: './timeslice_metric_basic_metric_with_field.yaml'
+                  std_deviation: './timeslice_metric_basic_metric_with_field.yaml'
+                  last_value: './timeslice_metric_basic_metric_with_field.yaml'
+                  cardinality: './timeslice_metric_basic_metric_with_field.yaml'
               anyOf:
                 - $ref: './timeslice_metric_basic_metric_with_field.yaml'
                 - $ref: './timeslice_metric_percentile_metric.yaml'