diff --git a/app/server/appsmith-interfaces/src/main/java/com/appsmith/external/exceptions/pluginExceptions/AppsmithPluginError.java b/app/server/appsmith-interfaces/src/main/java/com/appsmith/external/exceptions/pluginExceptions/AppsmithPluginError.java
index 9e3ad23fcd..8ed24cc472 100644
--- a/app/server/appsmith-interfaces/src/main/java/com/appsmith/external/exceptions/pluginExceptions/AppsmithPluginError.java
+++ b/app/server/appsmith-interfaces/src/main/java/com/appsmith/external/exceptions/pluginExceptions/AppsmithPluginError.java
@@ -25,6 +25,8 @@ public enum AppsmithPluginError {
             AppsmithErrorAction.LOG_EXTERNALLY, "Datasource configuration is invalid"),
     PLUGIN_DATASOURCE_TIMEOUT_ERROR(504, 5008, "{0}", AppsmithErrorAction.DEFAULT, "Timed out when connecting to " +
             "datasource"),
+    PLUGIN_AUTHENTICATION_ERROR(401, 4000, "Invalid authentication credentials. Please check datasource configuration.",
+            AppsmithErrorAction.DEFAULT, "Datasource authentication error"),
     ;
 
     private final Integer httpErrorCode;
diff --git a/app/server/appsmith-interfaces/src/main/java/com/appsmith/external/models/OAuth2.java b/app/server/appsmith-interfaces/src/main/java/com/appsmith/external/models/OAuth2.java
index 96c35dedb4..d04c1bf71c 100644
--- a/app/server/appsmith-interfaces/src/main/java/com/appsmith/external/models/OAuth2.java
+++ b/app/server/appsmith-interfaces/src/main/java/com/appsmith/external/models/OAuth2.java
@@ -85,9 +85,7 @@ public class OAuth2 extends AuthenticationDTO {
     @Override
     public Mono<Boolean> hasExpired() {
         if (this.authenticationResponse == null) {
-            return Mono.error(new AppsmithPluginException(
-                    AppsmithPluginError.PLUGIN_ERROR,
-                    "Expected datasource to have valid authentication tokens at this point"));
+            return Mono.error(new AppsmithPluginException(AppsmithPluginError.PLUGIN_AUTHENTICATION_ERROR));
         }
 
         if (this.authenticationResponse.expiresAt == null) {