diff --git a/litellm/router.py b/litellm/router.py
index 84b38b3985b..88b4087c1ee 100644
--- a/litellm/router.py
+++ b/litellm/router.py
@@ -4485,9 +4485,21 @@ class Router:
 
         if hasattr(original_exception, "message"):
             # add the available fallbacks to the exception
-            original_exception.message += ". Received Model Group={}\nAvailable Model Group Fallbacks={}".format(  # type: ignore
-                model_group,
-                fallback_model_group,
+            deployment_info = ""
+            if kwargs is not None:
+                metadata = kwargs.get('metadata', {})
+                if metadata and 'deployment' in metadata:
+                    deployment_info = f"\nUsed Deployment: {metadata['deployment']}"
+                    if 'model_info' in metadata:
+                        model_info = metadata['model_info']
+                        if isinstance(model_info, dict):
+                            deployment_info += f"\nDeployment ID: {model_info.get('id', 'unknown')}"
+            
+            original_exception.message += (  # type: ignore
+                f". Received Model Group={model_group}"
+                f"\nAvailable Model Group Fallbacks={fallback_model_group}"
+                f"{deployment_info}"
+                f"\n\n💡 Tip: If using wildcard patterns (e.g., 'openai/*'), ensure all matching deployments have credentials with access to this model."
             )
             if len(fallback_failure_exception_str) > 0:
                 original_exception.message += (  # type: ignore
@@ -7664,6 +7676,10 @@ class Router:
             )
 
             if pattern_deployments:
+                verbose_router_logger.debug(
+                    f"Pattern match for model='{model}': Found {len(pattern_deployments)} deployments. "
+                    f"Deployment IDs: {[d.get('model_info', {}).get('id', 'unknown') for d in pattern_deployments]}"
+                )
                 return model, pattern_deployments
 
             if (