diff --git a/src/caller/message/scheduling.rs b/src/caller/message/scheduling.rs
index b1b8ae6..870499a 100644
--- a/src/caller/message/scheduling.rs
+++ b/src/caller/message/scheduling.rs
@@ -51,7 +51,18 @@ pub mod request {
 
     impl UpdateScheduledMessageStatusRequest {
         pub fn is_valid(&self) -> bool {
-            !self.status.is_empty() || !self.scheduled_message_id.is_nil()
+            if !self.status.is_empty()  || !self.scheduled_message_id.is_nil() {
+                if self.status == textsender_models::message::scheduling::PENDING || 
+                    self.status == textsender_models::message::scheduling::READY || 
+                    self.status == textsender_models::message::scheduling::PROCESSING || 
+                    self.status == textsender_models::message::scheduling::DONE {
+                        true
+                } else {
+                    false
+                }
+            } else {
+                false
+            }
         }
     }
 }