diff --git a/x-pack/plugins/observability_solution/apm/server/routes/services/get_service_instance_metadata_details.ts b/x-pack/plugins/observability_solution/apm/server/routes/services/get_service_instance_metadata_details.ts
index 23491821aa9cf4..2054c29deae79b 100644
--- a/x-pack/plugins/observability_solution/apm/server/routes/services/get_service_instance_metadata_details.ts
+++ b/x-pack/plugins/observability_solution/apm/server/routes/services/get_service_instance_metadata_details.ts
@@ -7,11 +7,7 @@
 import { merge } from 'lodash';
 import { rangeQuery } from '@kbn/observability-plugin/server';
 import { ProcessorEvent } from '@kbn/observability-plugin/common';
-import {
-  metadataAppMetricMapping,
-  metadataAppTransactionEventMapping,
-  metaDataAppTransactionMetricMapping,
-} from '../../utils/es_fields_mappings';
+import { serviceInstanceMetadataDetailsMapping } from '../../utils/es_fields_mappings';
 import { METRICSET_NAME, SERVICE_NAME, SERVICE_NODE_NAME } from '../../../common/es_fields/apm';
 import { maybe } from '../../../common/utils/maybe';
 import {
@@ -76,7 +72,7 @@ export async function getServiceInstanceMetadataDetails({
       }
     );
 
-    return maybe(metadataAppMetricMapping(response.hits.hits[0]?.fields));
+    return maybe(serviceInstanceMetadataDetailsMapping(response.hits.hits[0]?.fields));
   }
 
   async function getTransactionEventSample() {
@@ -96,7 +92,7 @@ export async function getServiceInstanceMetadataDetails({
       }
     );
 
-    return maybe(metadataAppTransactionEventMapping(response.hits.hits[0]?.fields));
+    return maybe(serviceInstanceMetadataDetailsMapping(response.hits.hits[0]?.fields));
   }
 
   async function getTransactionMetricSample() {
@@ -119,7 +115,7 @@ export async function getServiceInstanceMetadataDetails({
         },
       }
     );
-    return maybe(metaDataAppTransactionMetricMapping(response.hits.hits[0]?.fields));
+    return maybe(serviceInstanceMetadataDetailsMapping(response.hits.hits[0]?.fields));
   }
 
   // we can expect the most detail of application metrics,
@@ -138,7 +134,6 @@ export async function getServiceInstanceMetadataDetails({
     applicationMetricSample
   );
 
-  // todo: find scenarios for container and cloud then add to mappings
   const { agent, service, container, kubernetes, host, cloud } = sample;
 
   return {
diff --git a/x-pack/plugins/observability_solution/apm/server/utils/es_fields_mappings.ts b/x-pack/plugins/observability_solution/apm/server/utils/es_fields_mappings.ts
index 26887fa08ee362..1bc570365b33d2 100644
--- a/x-pack/plugins/observability_solution/apm/server/utils/es_fields_mappings.ts
+++ b/x-pack/plugins/observability_solution/apm/server/utils/es_fields_mappings.ts
@@ -730,7 +730,7 @@ export const serviceMetadataIconsMapping = (
   };
 };
 
-// todo(milosz): test it
+// todo: check https://github.com/jennypavlova/kibana/pull/6#discussion_r1771611817
 export const serviceVersionMapping = (
   fields: Partial<Record<string, unknown[]>>
 ): Pick<Transaction | Span | APMError, 'observer'> | undefined => {
@@ -744,35 +744,28 @@ export const serviceVersionMapping = (
   };
 };
 
-export const metadataAppMetricMapping = (fields: Partial<Record<string, unknown[]>>) => {
+// todo: missing `container` and `could` mappings
+export const serviceInstanceMetadataDetailsMapping = (
+  fields: Partial<Record<string, unknown[]>> = {}
+) => {
   if (!fields) return undefined;
 
   return {
     '@timestamp': normalizeValue<string>(fields[AT_TIMESTAMP]),
     agent: {
-      name: normalizeValue<AgentName>(fields[AGENT_NAME]),
+      name: normalizeValue<string>(fields[AGENT_NAME]),
       version: normalizeValue<string>(fields[AGENT_VERSION]),
       activation_method: normalizeValue<string>(fields[AGENT_ACTIVATION_METHOD]),
     },
     host: {
       architecture: normalizeValue<string>(fields[HOST_ARCHITECTURE]),
       hostname: normalizeValue<string>(fields[HOST_HOSTNAME]),
-      ip: normalizeValue<string>(fields[HOST_IP]),
       name: normalizeValue<string>(fields[HOST_NAME]),
+      ip: normalizeValue<string>(fields[HOST_IP]),
       os: {
         platform: normalizeValue<string>(fields[HOST_OS_PLATFORM]),
       },
     },
-    kubernetes: {
-      namespace: normalizeValue<string>(fields[KUBERNETES_NAMESPACE]),
-      node: {
-        name: normalizeValue<string>(fields[KUBERNETES_NODE_NAME]),
-      },
-      pod: {
-        name: normalizeValue<string>(fields[KUBERNETES_POD_NAME]),
-        uid: normalizeValue<string>(fields[KUBERNETES_POD_UID]),
-      },
-    },
     service: {
       name: normalizeValue<string>(fields[SERVICE_NAME]),
       environment: normalizeValue<string>(fields[SERVICE_ENVIRONMENT]),
@@ -780,9 +773,6 @@ export const metadataAppMetricMapping = (fields: Partial<Record<string, unknown[
         name: normalizeValue<string>(fields[SERVICE_FRAMEWORK_NAME]),
         versions: normalizeValue<string>(fields[SERVICE_FRAMEWORK_VERSION]),
       },
-      language: {
-        name: normalizeValue<string>(fields[SERVICE_LANGUAGE_NAME]),
-      },
       node: {
         name: normalizeValue<string>(fields[SERVICE_NODE_NAME]),
       },
@@ -790,15 +780,12 @@ export const metadataAppMetricMapping = (fields: Partial<Record<string, unknown[
         name: normalizeValue<string>(fields[SERVICE_RUNTIME_NAME]),
         version: normalizeValue<string>(fields[SERVICE_RUNTIME_VERSION]),
       },
+      language: {
+        name: normalizeValue<string>(fields[SERVICE_LANGUAGE_NAME]),
+        version: normalizeValue<string>(fields[SERVICE_LANGUAGE_VERSION]),
+      },
       version: normalizeValue<string>(fields[SERVICE_VERSION]),
     },
-  };
-};
-
-export const metadataAppTransactionEventMapping = (fields: Partial<Record<string, unknown[]>>) => {
-  if (!fields) return undefined;
-
-  return {
     kubernetes: {
       namespace: normalizeValue<string>(fields[KUBERNETES_NAMESPACE]),
       node: {
@@ -809,82 +796,10 @@ export const metadataAppTransactionEventMapping = (fields: Partial<Record<string
         uid: normalizeValue<string>(fields[KUBERNETES_POD_UID]),
       },
     },
-    agent: {
-      name: normalizeValue<AgentName>(fields[AGENT_NAME]),
-      version: normalizeValue<string>(fields[AGENT_VERSION]),
-      activation_method: normalizeValue<string>(fields[AGENT_ACTIVATION_METHOD]),
-    },
-    '@timestamp': normalizeValue<string>(fields[AT_TIMESTAMP]),
-    service: {
-      name: normalizeValue<string>(fields[SERVICE_NAME]),
-      environment: normalizeValue<string>(fields[SERVICE_ENVIRONMENT]),
-      framework: {
-        name: normalizeValue<string>(fields[SERVICE_FRAMEWORK_NAME]),
-        versions: normalizeValue<string>(fields[SERVICE_FRAMEWORK_VERSION]),
-      },
-      language: {
-        name: normalizeValue<string>(fields[SERVICE_LANGUAGE_NAME]),
-      },
-      node: {
-        name: normalizeValue<string>(fields[SERVICE_NODE_NAME]),
-      },
-      runtime: {
-        name: normalizeValue<string>(fields[SERVICE_RUNTIME_NAME]),
-        version: normalizeValue<string>(fields[SERVICE_RUNTIME_VERSION]),
-      },
-      version: normalizeValue<string>(fields[SERVICE_VERSION]),
-    },
-    host: {
-      architecture: normalizeValue<string>(fields[HOST_ARCHITECTURE]),
-      hostname: normalizeValue<string>(fields[HOST_HOSTNAME]),
-      ip: fields[HOST_IP] as string[] | undefined,
-      name: normalizeValue<string>(fields[HOST_NAME]),
-      os: {
-        platform: normalizeValue<string>(fields[HOST_OS_PLATFORM]),
-      },
-    },
-  };
-};
-
-export const metaDataAppTransactionMetricMapping = (fields: Partial<Record<string, unknown[]>>) => {
-  if (!fields) return undefined;
-
-  return {
-    '@timestamp': normalizeValue<string>(fields[AT_TIMESTAMP]),
-    agent: {
-      name: normalizeValue<AgentName>(fields[AGENT_NAME]),
-    },
-    host: {
-      hostname: normalizeValue<string>(fields[HOST_HOSTNAME]),
-      name: normalizeValue<string>(fields[HOST_NAME]),
-      os: {
-        platform: normalizeValue<string>(fields[HOST_OS_PLATFORM]),
-      },
-    },
-    kubernetes: {
-      pod: {
-        name: normalizeValue<string>(fields[KUBERNETES_POD_NAME]),
-      },
-    },
-    service: {
-      name: normalizeValue<string>(fields[SERVICE_NAME]),
-      environment: normalizeValue<string>(fields[SERVICE_ENVIRONMENT]),
-      language: {
-        name: normalizeValue<string>(fields[SERVICE_LANGUAGE_NAME]),
-      },
-      node: {
-        name: normalizeValue<string>(fields[SERVICE_NODE_NAME]),
-      },
-      runtime: {
-        name: normalizeValue<string>(fields[SERVICE_RUNTIME_NAME]),
-        version: normalizeValue<string>(fields[SERVICE_RUNTIME_VERSION]),
-      },
-      version: normalizeValue<string>(fields[SERVICE_VERSION]),
-    },
   };
 };
 
-// todo: missing cloud and service properties
+// todo: missing `cloud` and `service` properties
 export const serviceAgentNameMapping = (fields: Partial<Record<string, unknown[]>>) => {
   if (!fields) return undefined;