diff --git a/tasmota/support_command.ino b/tasmota/support_command.ino
index e2942945b..3c26923c5 100644
--- a/tasmota/support_command.ino
+++ b/tasmota/support_command.ino
@@ -76,48 +76,47 @@ const char kWifiConfig[] PROGMEM =
 
 /********************************************************************************************/
 
-void ResponseCmndNumber(int value)
-{
+void ResponseCmndNumber(int value) {
   Response_P(S_JSON_COMMAND_NVALUE, XdrvMailbox.command, value);
 }
 
-void ResponseCmndFloat(float value, uint32_t decimals)
-{
+void ResponseCmndFloat(float value, uint32_t decimals) {
   Response_P(PSTR("{\"%s\":%*_f}"), XdrvMailbox.command, decimals, &value);  // Return float value without quotes
 }
 
-void ResponseCmndIdxNumber(int value)
-{
+void ResponseCmndIdxNumber(int value) {
   Response_P(S_JSON_COMMAND_INDEX_NVALUE, XdrvMailbox.command, XdrvMailbox.index, value);
 }
 
-void ResponseCmndChar_P(const char* value)
-{
+void ResponseCmndChar_P(const char* value) {
   Response_P(S_JSON_COMMAND_SVALUE, XdrvMailbox.command, value);
 }
 
-void ResponseCmndChar(const char* value)
-{
+void ResponseCmndChar(const char* value) {
   Response_P(S_JSON_COMMAND_SVALUE, XdrvMailbox.command, EscapeJSONString(value).c_str());
 }
 
-void ResponseCmndStateText(uint32_t value)
-{
+void ResponseCmndStateText(uint32_t value) {
   ResponseCmndChar(GetStateText(value));
 }
 
-void ResponseCmndDone(void)
-{
-  ResponseCmndChar(PSTR(D_JSON_DONE));
+void ResponseCmndDone(void) {
+  ResponseCmndChar_P(PSTR(D_JSON_DONE));
 }
 
-void ResponseCmndIdxChar(const char* value)
-{
+void ResponseCmndError(void) {
+  ResponseCmndChar_P(PSTR(D_JSON_ERROR));
+}
+
+void ResponseCmndIdxChar(const char* value) {
   Response_P(S_JSON_COMMAND_INDEX_SVALUE, XdrvMailbox.command, XdrvMailbox.index, EscapeJSONString(value).c_str());
 }
 
-void ResponseCmndAll(uint32_t text_index, uint32_t count)
-{
+void ResponseCmndIdxError(void) {
+  ResponseCmndIdxChar(PSTR(D_JSON_ERROR));
+}
+
+void ResponseCmndAll(uint32_t text_index, uint32_t count) {
   uint32_t real_index = text_index;
   ResponseClear();
   for (uint32_t i = 0; i < count; i++) {
diff --git a/tasmota/xdrv_10_rules.ino b/tasmota/xdrv_10_rules.ino
index 1c3345fd7..fc52aee8a 100644
--- a/tasmota/xdrv_10_rules.ino
+++ b/tasmota/xdrv_10_rules.ino
@@ -2297,7 +2297,7 @@ void CmndScale(void)
 {
   if ((XdrvMailbox.index > 0) && (XdrvMailbox.index <= MAX_RULE_VARS)) {
     if (XdrvMailbox.data_len > 0) {
-      if (ArgC() > 1) {  // Process parameter entry
+      if (ArgC() == 5) {  // Process parameter entry
         char argument[XdrvMailbox.data_len];
 
         float valueIN = CharToFloat(ArgV(argument, 1));
@@ -2308,6 +2308,9 @@ void CmndScale(void)
         float value = map_double(valueIN, fromLow, fromHigh, toLow, toHigh);
         dtostrfd(value, Settings.flag2.calc_resolution, rules_vars[XdrvMailbox.index -1]);
         bitSet(Rules.vars_event, XdrvMailbox.index -1);
+      } else {
+        ResponseCmndIdxError();
+        return;
       }
     }
     ResponseCmndIdxChar(rules_vars[XdrvMailbox.index -1]);
diff --git a/tasmota/xdrv_11_knx.ino b/tasmota/xdrv_11_knx.ino
index afddce071..445bcf0f0 100644
--- a/tasmota/xdrv_11_knx.ino
+++ b/tasmota/xdrv_11_knx.ino
@@ -1189,7 +1189,7 @@ void CmndKnxPa(void)
 
       if ( ((pa_area == 0) && (pa_line == 0) && (pa_member == 0))
             || (pa_area > 15) || (pa_line > 15) || (pa_member > 255) ) {
-              Response_P (PSTR("{\"%s\":\"" D_ERROR "\"}"), XdrvMailbox.command );
+              ResponseCmndError();
               return;
       }  // Invalid command
 
@@ -1220,7 +1220,7 @@ void CmndKnxGa(void)
           || (ga_area > 31) || (ga_line > 7) || (ga_member > 255)
           || (ga_option < 0) || ((ga_option > KNX_MAX_device_param ) && (ga_option != KNX_Empty))
           || (!device_param[ga_option-1].show) ) {
-               Response_P (PSTR("{\"%s\":\"" D_ERROR "\"}"), XdrvMailbox.command );
+               ResponseCmndIdxError();
                return;
         }  // Invalid command
 
@@ -1239,7 +1239,7 @@ void CmndKnxGa(void)
         if ( (XdrvMailbox.payload <= Settings.knx_GA_registered) && (XdrvMailbox.payload > 0) ) {
           XdrvMailbox.index = XdrvMailbox.payload;
         } else {
-          Response_P (PSTR("{\"%s\":\"" D_ERROR "\"}"), XdrvMailbox.command );
+          ResponseCmndIdxError();
           return;
         }
       }
@@ -1250,7 +1250,7 @@ void CmndKnxGa(void)
           KNX_addr.ga.area, KNX_addr.ga.line, KNX_addr.ga.member );
       }
     } else {
-      ResponseCmndNumber (Settings.knx_GA_registered );
+      ResponseCmndIdxNumber (Settings.knx_GA_registered );
     }
   }
 }
@@ -1271,7 +1271,7 @@ void CmndKnxCb(void)
           || (cb_area > 31) || (cb_line > 7) || (cb_member > 255)
           || (cb_option < 0) || ((cb_option > KNX_MAX_device_param ) && (cb_option != KNX_Empty))
           || (!device_param[cb_option-1].show) ) {
-               Response_P (PSTR("{\"%s\":\"" D_ERROR "\"}"), XdrvMailbox.command );
+               ResponseCmndIdxError();
                return;
         }  // Invalid command
 
@@ -1290,7 +1290,7 @@ void CmndKnxCb(void)
         if ( (XdrvMailbox.payload <= Settings.knx_CB_registered) && (XdrvMailbox.payload > 0) ) {
           XdrvMailbox.index = XdrvMailbox.payload;
         } else {
-          Response_P (PSTR("{\"%s\":\"" D_ERROR "\"}"), XdrvMailbox.command );
+          ResponseCmndIdxError();
           return;
         }
       }
@@ -1301,7 +1301,7 @@ void CmndKnxCb(void)
           KNX_addr.ga.area, KNX_addr.ga.line, KNX_addr.ga.member );
       }
     } else {
-      ResponseCmndNumber (Settings.knx_CB_registered );
+      ResponseCmndIdxNumber (Settings.knx_CB_registered );
     }
   }
 }
diff --git a/tasmota/xdrv_29_deepsleep.ino b/tasmota/xdrv_29_deepsleep.ino
index 45da79cb2..48e1b727a 100644
--- a/tasmota/xdrv_29_deepsleep.ino
+++ b/tasmota/xdrv_29_deepsleep.ino
@@ -188,7 +188,7 @@ void CmndDeepsleepTime(void)
       }
     }
   }
-  Response_P(S_JSON_COMMAND_NVALUE, XdrvMailbox.command, Settings.deepsleep);
+  ResponseCmndNumber(Settings.deepsleep);
 }
 
 /*********************************************************************************************\