diff --git a/tools/packchk/include/CheckFiles.h b/tools/packchk/include/CheckFiles.h
index b7d9d8dd2..254313c3f 100644
--- a/tools/packchk/include/CheckFiles.h
+++ b/tools/packchk/include/CheckFiles.h
@@ -51,6 +51,11 @@ class CheckFiles {
   std::string GetFullFilename(const std::string& fileName);
   bool GatherIncPathVsAttrConfig(RteItem* item);
   bool CheckAttrConfigFiles();
+  bool CheckCSolutionEntries(RteItem* item);
+  bool CheckCsolutionLayer(RteItem* item);
+  bool CheckCsolutionTemplate(RteItem* item);
+  bool CheckForTag(RteItem* item, const std::list<std::string>& searchAttributes);
+
 
 private:
   std::string m_packagePath;
diff --git a/tools/packchk/src/CheckFiles.cpp b/tools/packchk/src/CheckFiles.cpp
index 9f84ae64d..2d6e2fa71 100644
--- a/tools/packchk/src/CheckFiles.cpp
+++ b/tools/packchk/src/CheckFiles.cpp
@@ -45,6 +45,8 @@ VISIT_RESULT CheckFilesVisitor::Visit(RteItem* item)
   m_checkFiles.CheckDeprecated(item);
   m_checkFiles.CheckDescription(item);
   m_checkFiles.GatherIncPathVsAttrConfig(item);
+  m_checkFiles.CheckCSolutionEntries(item);
+
 
   return VISIT_RESULT::CONTINUE_VISIT;
 }
@@ -421,6 +423,11 @@ bool CheckFiles::CheckFileExists(const string& fileName, int lineNo, bool associ
 
   string checkPath = GetFullFilename(fileName);
 
+  if(XmlValueAdjuster::IsAbsolute(fileName)) {
+    LogMsg("M326", PATH(fileName), lineNo);   // error : absolute paths are not permitted
+    return false;
+  }
+
   bool ok = true;
   if(!RteFsUtils::Exists(checkPath)) {
     if(associated) {
@@ -533,7 +540,7 @@ bool CheckFiles::CheckCaseSense(const string& fileName, int lineNo)
     }
     else {
       string errMsg = string("file/folder \"") + seg + "\" not found";
-      LogMsg("M103", VAL("REF", errMsg));
+      LogMsg("M103", VAL("REF", errMsg), lineNo);
       return false;
     }
   }
@@ -899,7 +906,6 @@ bool CheckFiles::CheckFileExtension(RteItem* item)
   return ok;
 }
 
-
 bool CheckFiles::GatherIncPathVsAttrConfig(RteItem* item)
 {
   const auto file = dynamic_cast<RteFile*>(item);
@@ -952,3 +958,100 @@ bool CheckFiles::CheckAttrConfigFiles()
   return bOk;
 }
 
+bool CheckFiles::CheckCSolutionEntries(RteItem* item)
+{
+  if(item->GetTag() != "csolution") {
+    return true;
+  }
+
+  bool bOk = true;
+  const auto lineNo = item->GetLineNumber();
+
+  const auto& children = item->GetChildren();
+  if(children.empty()) {
+    LogMsg("M100", lineNo); // No entries for %TAG% found
+    return false;
+  }
+
+  for(const auto& child : children) {
+    const auto& tag = child->GetTag();
+    if(tag == "clayer") {
+      CheckCsolutionLayer(child);
+    }
+    else if(tag == "template") {
+      CheckCsolutionTemplate(child);
+    }
+  }
+
+  return bOk;
+}
+
+bool CheckFiles::CheckForTag(RteItem* item, const list<string>& searchAttributes)
+{
+  const auto lineNo = item->GetLineNumber();
+  const auto& tag = item->GetTag();
+  bool bOk = true;
+
+  for(const auto& searchAttr : searchAttributes) {
+    if(item->GetAttribute(searchAttr) == "") {
+      LogMsg("M601", TAG(searchAttr), TAG2(tag), lineNo);   // '%TAG%' missing on '%TAG2%'
+      bOk = false;
+    }
+  }
+
+  return bOk;
+}
+
+bool CheckFiles::CheckCsolutionLayer(RteItem* item)
+{
+  CheckForTag(item, list<string>({"type", "path", "file"}));
+
+  const auto lineNo = item->GetLineNumber();
+  const auto& path = item->GetAttribute("path");
+  const auto& file = item->GetAttribute("file");
+
+  if(!path.empty() && !file.empty()) {
+    const auto fileName = path + "/" + file;
+    CheckForSpaces(fileName, lineNo);
+    if(CheckFileExists(fileName, lineNo)) {
+      CheckCaseSense(fileName, lineNo);
+      CheckFileIsInPack(fileName, lineNo);
+    }
+  }
+
+
+  return true;
+}
+
+bool CheckFiles::CheckCsolutionTemplate(RteItem* item)
+{
+  CheckForTag(item, list<string>({"name", "path", "file"}));
+
+  const auto lineNo = item->GetLineNumber();
+  const auto& tag = item->GetTag();
+  const auto& children = item->GetChildren();
+  const auto& path = item->GetAttribute("path");
+  const auto& file = item->GetAttribute("file");
+
+  if(!path.empty() && !file.empty()) {
+    const auto fileName = path + "/" + file;
+    CheckForSpaces(fileName, lineNo);
+    if(CheckFileExists(fileName, lineNo)) {
+      CheckCaseSense(fileName, lineNo);
+      CheckFileIsInPack(fileName, lineNo);
+    }
+  }
+
+  bool bFound = false;
+  for(const auto child : children) {
+    if(child->GetTag() == "description") {
+      bFound = true;
+    }
+  }
+
+  if(!bFound) {
+    LogMsg("M601", TAG("description"), TAG2(tag), lineNo);   // '%TAG%' missing on '%TAG2%'
+  }
+
+  return bFound;
+}
diff --git a/tools/packchk/test/data/CsolutionTag/Files/header1.h b/tools/packchk/test/data/CsolutionTag/Files/header1.h
new file mode 100644
index 000000000..5c7e4f187
--- /dev/null
+++ b/tools/packchk/test/data/CsolutionTag/Files/header1.h
@@ -0,0 +1 @@
+//header 1
diff --git a/tools/packchk/test/data/CsolutionTag/Files/test1.c b/tools/packchk/test/data/CsolutionTag/Files/test1.c
new file mode 100644
index 000000000..6904aa08d
--- /dev/null
+++ b/tools/packchk/test/data/CsolutionTag/Files/test1.c
@@ -0,0 +1 @@
+// tests1.c
diff --git a/tools/packchk/test/data/CsolutionTag/License.txt b/tools/packchk/test/data/CsolutionTag/License.txt
new file mode 100644
index 000000000..86942a801
--- /dev/null
+++ b/tools/packchk/test/data/CsolutionTag/License.txt
@@ -0,0 +1,2 @@
+License
+
diff --git a/tools/packchk/test/data/CsolutionTag/TestVendor.CsolutionTag.pdsc b/tools/packchk/test/data/CsolutionTag/TestVendor.CsolutionTag.pdsc
new file mode 100644
index 000000000..7fc386865
--- /dev/null
+++ b/tools/packchk/test/data/CsolutionTag/TestVendor.CsolutionTag.pdsc
@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<package schemaVersion="1.4" xmlns:xs="http://www.w3.org/2001/XMLSchema-instance" xs:noNamespaceSchemaLocation="PACK.xsd">
+  <vendor>TestVendor</vendor>
+  <url>https://www.testurl.com/pack/</url>
+  <name>CsolutionTag</name>
+  <description>CsolutionTag</description>
+  <license>License.txt</license>
+
+  <releases>
+    <release version="0.0.1" date="2025-03-05">>
+      Initial release of CsolutionTag.
+    </release>
+  </releases>
+
+  <keywords>
+    <keyword>TestInvalidPack</keyword>
+  </keywords>
+
+  <conditions>
+    <condition id="Test_Condition">
+      <description>Test Device</description>
+      <require Dvendor="ARM:82"/>
+    </condition>
+  </conditions>
+
+  <components>
+    <component Cclass="TestClass" Cgroup="TestGlobal" Cversion="1.0.0" condition="Test_Condition">
+      <description>TestGlobal</description>
+      <files>
+        <file category="source" name="Files/test1.c"/>
+        <file category="TestGlobal" name="Files/header1.h"/>
+      </files>
+    </component>
+  </components>
+
+  <csolution> 
+    <clayer type="Board" path="boards/myboard/cmsis/layers/baremetal"  file="Board.clayer.yml" copy-to="Board/myboard" condition="Test_Condition"/>
+    <clayer copy-to="Board/myboard" condition="Not_Exist"/>
+    <clayer type="Board" path="boards/myboard/cmsis/layers/baremetal"  file="NotExist.clayer.yml" copy-to="Board/myboard" condition="Test_Condition"/>
+    <clayer type="Board" path="/boards/myboard/cmsis/layers/baremetal"  file="Board.clayer.yml" copy-to="Board/myboard" condition="Test_Condition"/>
+
+    <template name="Simple Device project" path="boards/myboard/cmsis/templates/Device/Simple" file="Simple.csolution.yml" condition="Test_Condition">
+      <description>Single-core project with no TrustZone </description>
+    </template>
+    <template condition="Not_Exist">
+    </template>
+    <template name="Simple Device project" path="boards/myboard/cmsis/templates/Device/Simple" file="NotExist.csolution.yml" condition="Test_Condition">
+      <description>Single-core project with no TrustZone </description>
+    </template>
+    <template name="Simple Device project" path="/boards/myboard/cmsis/templates/Device/Simple" file="Simple.csolution.yml" condition="Test_Condition">
+      <description>Single-core project with no TrustZone </description>
+    </template>
+  </csolution> 
+
+</package>
diff --git a/tools/packchk/test/data/CsolutionTag/boards/myboard/cmsis/layers/baremetal/Board.clayer.yml b/tools/packchk/test/data/CsolutionTag/boards/myboard/cmsis/layers/baremetal/Board.clayer.yml
new file mode 100644
index 000000000..0a52ef3c7
--- /dev/null
+++ b/tools/packchk/test/data/CsolutionTag/boards/myboard/cmsis/layers/baremetal/Board.clayer.yml
@@ -0,0 +1 @@
+//yaml file
diff --git a/tools/packchk/test/data/CsolutionTag/boards/myboard/cmsis/templates/Device/Simple/Simple.csolution.yml b/tools/packchk/test/data/CsolutionTag/boards/myboard/cmsis/templates/Device/Simple/Simple.csolution.yml
new file mode 100644
index 000000000..0a52ef3c7
--- /dev/null
+++ b/tools/packchk/test/data/CsolutionTag/boards/myboard/cmsis/templates/Device/Simple/Simple.csolution.yml
@@ -0,0 +1 @@
+//yaml file
diff --git a/tools/packchk/test/integtests/src/PackChkIntegTests.cpp b/tools/packchk/test/integtests/src/PackChkIntegTests.cpp
index f102868ba..60f34e152 100644
--- a/tools/packchk/test/integtests/src/PackChkIntegTests.cpp
+++ b/tools/packchk/test/integtests/src/PackChkIntegTests.cpp
@@ -1155,6 +1155,53 @@ TEST_F(PackChkIntegTests, CheckConcurrentComponentFiles) {
   }
 }
 
+TEST_F(PackChkIntegTests, CheckCsolutionTag) {
+  const char* argv[3];
+
+  string pdscFile = PackChkIntegTestEnv::localtestdata_dir +
+    "/CsolutionTag/TestVendor.CsolutionTag.pdsc";
+  ASSERT_TRUE(RteFsUtils::Exists(pdscFile));
+
+  argv[0] = (char*)"";
+  argv[1] = (char*)pdscFile.c_str();
+  argv[2] = (char*)"--disable-validation";
+
+  PackChk packChk;
+  EXPECT_EQ(1, packChk.Check(3, argv, nullptr));
+
+  auto errMsgs = ErrLog::Get()->GetLogMessages();
+  int M110_foundCnt = 0;
+  int M500_foundCnt = 0;
+  int M601_foundCnt = 0;
+  int M323_foundCnt = 0;
+  int M326_foundCnt = 0;
+  int M332_foundCnt = 0;
+
+  for (const string& msg : errMsgs) {
+    if (msg.find("M110", 0) != string::npos) {
+      M110_foundCnt++;
+    }
+    if (msg.find("M500", 0) != string::npos) {
+      M500_foundCnt++;
+    }
+    if (msg.find("M601", 0) != string::npos) {
+      M601_foundCnt++;
+    }
+    if (msg.find("M323", 0) != string::npos) {
+      M323_foundCnt++;
+    }
+    if (msg.find("M326", 0) != string::npos) {
+      M326_foundCnt++;
+    }
+    if (msg.find("M332", 0) != string::npos) {
+      M332_foundCnt++;
+    }
+  }
+
+  if(M110_foundCnt != 1 || M500_foundCnt != 2 || M601_foundCnt != 7 || M323_foundCnt != 2 || M326_foundCnt != 2 || M332_foundCnt != 2 ) {
+    FAIL() << "error: Missing messages testing <csolution> tag";
+  }
+}
 
 TEST_F(PackChkIntegTests, CheckConditionComponentDependency_Pos) {
   const char* argv[7];