diff --git a/rnex-core/src/nex/datastore.rs b/rnex-core/src/nex/datastore.rs
index 4ef91c6..32f4980 100644
--- a/rnex-core/src/nex/datastore.rs
+++ b/rnex-core/src/nex/datastore.rs
@@ -1639,4 +1639,9 @@ impl DataStore for User {
 
         Ok(list)
     }
+
+    async fn check_rate_custom_ranking_counter(&self, application_id: u32) -> Result<bool, ErrorCode> {
+        // official servers always return true? application ID is always 0 as far as i know. maybe a check is warranted for the app id?
+        Ok(true)
+    }
 }
diff --git a/rnex-core/src/rmc/protocols/datastore.rs b/rnex-core/src/rmc/protocols/datastore.rs
index 29d4ca1..f0d2047 100644
--- a/rnex-core/src/rmc/protocols/datastore.rs
+++ b/rnex-core/src/rmc/protocols/datastore.rs
@@ -400,6 +400,11 @@ pub trait DataStore {
     #[method_id(72)]
     async fn get_course_record(
         &self,
-        get_course_record_param: DataStoreGetCourseRecordParam
+        get_course_record_param: DataStoreGetCourseRecordParam,
     ) -> Result<DataStoreGetCourseRecordResult, ErrorCode>;
+    #[method_id(79)]
+    async fn check_rate_custom_ranking_counter(
+        &self,
+        application_id: u32,
+    ) -> Result<bool, ErrorCode>;
 }