Explain how to setup Sentry in combination with trace bundle

README.md

@@ -122,7 +122,23 @@ In traceId mode the header name can be changed with the `header` configuration o
 
 ## Sentry integration
 
-When enabled, the bundle will add `trace_id` and `transaction_id` tags to the Sentry reports.
+By default sentry has its own trace id and transaction id which will be propagated through the Sentry SDK. However this traceId will be different
+than the one generated by this bundle. To fully integrate with Sentry you have to set `$config->sentry()->enabled(true)` for this bundle and
+disable Sentry's own tracing by setting `$sentry->tracing()->enabled(false);` in your Sentry configuration.
+
+**Example:**
+```php
+// config/packages/sentry.php
+return static function (SentryConfig $sentry): void {
+    $sentry->tracing()->enabled(false);
+};
+
+// config/packages/symfony_trace_bundle.php
+return static function (SymfonyTraceConfig $config): void {
+    $config->sentry()->enabled(true);
+};
+```
+This will ensure that the traceId and transactionId generated by this bundle will be used in Sentry reports.
 
 ## About us