diff --git a/VarTabDumpObserver.c b/VarTabDumpObserver.c
index b980f58..d64d1b5 100644
--- a/VarTabDumpObserver.c
+++ b/VarTabDumpObserver.c
@@ -197,6 +197,8 @@ void VarsTabDumpObserver_RequireDump(tVarsTabDumpObserver *env) {
     if (osMutexAcquire(env->access, 1000) == osOK) {
         env->dumpAfter = SystemGetMs() + env->delay;
         osMutexRelease(env->access);
+    } else {
+        LoggerErrorStatic(LOGGER, LOG_SIGN, "Access error VarsTabDumpObserver_RequireDump");
     }
 }
 
@@ -214,6 +216,8 @@ void DeviceStorageProcessing(tVarsTabDumpObserver *env) {
                 env->dumpAfter = 0;
             }
             osMutexRelease(env->access);
+        } else {
+            LoggerErrorStatic(LOGGER, LOG_SIGN, "Access error DeviceStorageProcessing");
         }
     }
 }
@@ -241,6 +245,8 @@ void VarsTabDumpObserver_Flush(tVarsTabDumpObserver *env) {
             VarsTabDumpObserverParam_Dump(env);
             env->dumpAfter = 0;
             osMutexRelease(env->access);
+        } else {
+            LoggerErrorStatic(LOGGER, LOG_SIGN, "Access error VarsTabDumpObserver_Flush");
         }
     }
 }