diff --git a/tools/svdconv/SVDConv/src/SVDConv_Msgs.cpp b/tools/svdconv/SVDConv/src/SVDConv_Msgs.cpp
index 59336673f..e44c775b6 100644
--- a/tools/svdconv/SVDConv/src/SVDConv_Msgs.cpp
+++ b/tools/svdconv/SVDConv/src/SVDConv_Msgs.cpp
@@ -204,10 +204,11 @@ const MsgTable SvdConv::msgTable = {
   { "M384", { MsgLevel::LEVEL_ERROR,    CRLF_B,   "Number of PMU Event Counters (found val: '%NUM%') not set or outside range [2..31]. Ignoring PMU entry."} },   // 14.02.2020
   { "M385", { MsgLevel::LEVEL_ERROR,    CRLF_B,   "PMU not supported for CPU '%NAME%'"                                         } },   // 14.02.2020
   { "M386", { MsgLevel::LEVEL_ERROR,    CRLF_B,   "Name not C compliant: '%NAME%' : Brackets [] found"                         } },
-  { "M387", { MsgLevel::LEVEL_ERROR,    CRLF_B,   ""                                                                           } },
+  { "M387", { MsgLevel::LEVEL_ERROR,    CRLF_B,   "CPU: <sauNumRegions> set to 0 but regions are configured."               } },
   { "M388", { MsgLevel::LEVEL_ERROR,    CRLF_B,   "MVE Floating-Point support is set but MVE is not set"                       } },
   { "M389", { MsgLevel::LEVEL_ERROR,    CRLF_B,   "Specified <deviceNumInterrupts>: '%NUM%' greater or equal '%NAME%': '%NUM2%'."} },   // 05.05.2020
   { "M390", { MsgLevel::LEVEL_WARNING3, CRLF_B,   "Checking IRQ '%NAME%': CPU unknown (see <cpu>). Assuming a maximum of %NUM% external Interrupts."} },    // 13.05.2020
+  { "M391", { MsgLevel::LEVEL_WARNING,  CRLF_B,   "CPU: configured number of SAU regions '%NUM%' greater than <sauNumRegions> value: '%NUM2%'"        } },
 
   // 500... SfrCC2 related Data modification Errors
   { "M500", { MsgLevel::LEVEL_ERROR,    CRLF_B,   ""                                                                            } },
diff --git a/tools/svdconv/SVDModel/src/SvdCpu.cpp b/tools/svdconv/SVDModel/src/SvdCpu.cpp
index 35493c5a1..ba5351185 100644
--- a/tools/svdconv/SVDModel/src/SvdCpu.cpp
+++ b/tools/svdconv/SVDModel/src/SvdCpu.cpp
@@ -336,16 +336,23 @@ bool SvdCpu::CheckItem()
       LogMsg("M363", lineNo);
       m_sauRegionsConfig->Invalidate();
     }
+    else if(m_sauNumRegions == 0) {
+      LogMsg("M387", lineNo);
+      m_sauRegionsConfig->Invalidate();
+    }
   }
 
   if(m_sauNumRegions != SvdItem::VALUE32_NOT_INIT) {
-    if(m_sauNumRegions == 0 || m_sauNumRegions > MAXNUM_SAU_REGIONS) {
+    if(m_sauNumRegions > MAXNUM_SAU_REGIONS) {
       LogMsg("M364", NUM(m_sauNumRegions), NUM2(MAXNUM_SAU_REGIONS), lineNo);
       m_sauNumRegions = SvdItem::VALUE32_NOT_INIT;
       if(m_sauRegionsConfig) {
         m_sauRegionsConfig->Invalidate();
       }
     }
+    else if(m_sauRegionsConfig && m_sauNumRegions < m_sauRegionsConfig->GetChildCount()) {
+      LogMsg("M391", NUM(m_sauRegionsConfig->GetChildCount()), NUM2(m_sauNumRegions),lineNo);
+    }
   }
 
   if(m_pmuPresent) {