diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7be466da..8f00ad98 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### Added
+
+- Logging functionality to track domains missing `publisherId` configuration in VTEXAdsProvider
+
 ## [2.145.0] - 2025-12-04
 
 ### Added
diff --git a/react/components/VTEXAdsProvider.tsx b/react/components/VTEXAdsProvider.tsx
index 5ce8b69e..ef2d843a 100644
--- a/react/components/VTEXAdsProvider.tsx
+++ b/react/components/VTEXAdsProvider.tsx
@@ -10,6 +10,7 @@ import {
   getUserData,
   SessionResponse,
 } from '../hooks/getUserData'
+import { sendErrorLog } from '../utils/sendErrorLog'
 
 interface VTEXAdsProviderProps {
   children?: React.ReactNode
@@ -93,6 +94,11 @@ export const VTEXAdsProvider = ({ children }: VTEXAdsProviderProps) => {
   }
 
   if (!publisherId) {
+    sendErrorLog({
+      message: 'PublisherId não encontrado no VTEXAdsProvider',
+      body: `PublisherId ausente para a conta: ${account}`,
+      searchIndex: 'ads_pai',
+    }).catch(() => {})
     return children
   }
 
diff --git a/react/utils/sendErrorLog.ts b/react/utils/sendErrorLog.ts
new file mode 100644
index 00000000..daa2a7a0
--- /dev/null
+++ b/react/utils/sendErrorLog.ts
@@ -0,0 +1,138 @@
+interface SendLogOptions {
+  message: string
+  searchIndex?: string
+  environment?: string
+  body?: string
+}
+
+export async function sendErrorLog(
+  options: SendLogOptions
+): Promise<Response | void> {
+  if (!options?.searchIndex) {
+    return null
+  }
+
+  const { message, searchIndex, environment = 'production', body } = options
+
+  const severityText = 'ERROR'
+  const severityNumber = 17
+  const timeUnixNano = (Date.now() * 1000000).toString()
+  const observedTimeUnixNano = timeUnixNano
+
+  const traceId = [...crypto.getRandomValues(new Uint8Array(16))]
+    .map(b => b.toString(16).padStart(2, '0'))
+    .join('')
+
+  const spanId = [...crypto.getRandomValues(new Uint8Array(8))]
+    .map(b => b.toString(16).padStart(2, '0'))
+    .join('')
+
+  let hostname = ''
+  let path = ''
+  let url = ''
+
+  if (typeof window !== 'undefined' && window.location) {
+    hostname = window.location.hostname
+    path = window.location.pathname
+    url = window.location.href
+  }
+
+  const payload = {
+    resourceLogs: [
+      {
+        resource: {
+          attributes: [
+            {
+              key: '_msg',
+              value: {
+                stringValue: message ?? 'Log message',
+              },
+            },
+            {
+              key: 'hostname',
+              value: {
+                stringValue: hostname,
+              },
+            },
+            {
+              key: 'path',
+              value: {
+                stringValue: path,
+              },
+            },
+            {
+              key: 'environment',
+              value: {
+                stringValue: environment,
+              },
+            },
+            {
+              key: 'browserInfos',
+              value: {
+                stringValue: JSON.stringify({
+                  url,
+                  hostname,
+                  path,
+                }),
+              },
+            },
+            {
+              key: 'searchParams',
+              value: {
+                stringValue:
+                  typeof window !== 'undefined' && window.location
+                    ? window.location.search
+                    : '',
+              },
+            },
+          ],
+        },
+        scopeLogs: [
+          {
+            scope: {},
+            logRecords: [
+              {
+                timeUnixNano,
+                observedTimeUnixNano,
+                severityText,
+                severityNumber,
+                attributes: [
+                  {
+                    key: 'vtex.search_index',
+                    value: {
+                      stringValue: searchIndex,
+                    },
+                  },
+                  {
+                    key: 'body',
+                    value: {
+                      stringValue: body ?? message ?? 'Log message',
+                    },
+                  },
+                ],
+                traceId,
+                spanId,
+              },
+            ],
+          },
+        ],
+      },
+    ],
+  }
+
+  try {
+    const response = await fetch(
+      'https://stable.vtexobservability.com/v1/logs',
+      {
+        method: 'POST',
+        headers: {
+          'Content-Type': 'application/json',
+        },
+        body: JSON.stringify(payload),
+      }
+    )
+    return response
+  } catch (error) {
+    console.error('Erro ao enviar log:', error)
+  }
+}