diff --git a/configuration/ibm/50001_power_vs.json b/configuration/ibm/50001_power_vs.json
index e3b5e06..b2e0253 100644
--- a/configuration/ibm/50001_power_vs.json
+++ b/configuration/ibm/50001_power_vs.json
@@ -2,30 +2,30 @@
     "/sys/bus/spi/drivers/at25/spi12.0/eeprom": {
         "CCIN": ["5C85"],
         "VINI": {
-            "PN": [48, 50, 89, 75, 57, 52, 48]
+            "FN": [48, 50, 89, 75, 57, 52, 48]
         }
     },
     "/sys/bus/spi/drivers/at25/spi22.0/eeprom": {
         "CCIN": ["5C85"],
         "VINI": {
-            "PN": [48, 50, 89, 75, 57, 52, 48]
+            "FN": [48, 50, 89, 75, 57, 52, 48]
         }
     },
     "/sys/bus/spi/drivers/at25/spi32.0/eeprom": {
         "CCIN": ["5C85"],
         "VINI": {
-            "PN": [48, 50, 89, 75, 57, 52, 48]
+            "FN": [48, 50, 89, 75, 57, 52, 48]
         }
     },
     "/sys/bus/spi/drivers/at25/spi42.0/eeprom": {
         "CCIN": ["5C85"],
         "VINI": {
-            "PN": [48, 50, 89, 75, 57, 52, 48]
+            "FN": [48, 50, 89, 75, 57, 52, 48]
         }
     },
     "/sys/bus/i2c/drivers/at24/8-0051/eeprom": {
         "VINI": {
-            "PN": [48, 51, 82, 86, 50, 56, 50]
+            "FN": [48, 51, 82, 86, 50, 56, 50]
         }
     }
 }
diff --git a/configuration/ibm/50003_power_vs.json b/configuration/ibm/50003_power_vs.json
index 2866c32..6414d3a 100644
--- a/configuration/ibm/50003_power_vs.json
+++ b/configuration/ibm/50003_power_vs.json
@@ -2,54 +2,54 @@
     "/sys/bus/spi/drivers/at25/spi12.0/eeprom": {
         "CCIN": ["5CF8"],
         "VINI": {
-            "PN": [48, 51, 85, 72, 48, 57, 56]
+            "FN": [48, 51, 85, 72, 48, 57, 56]
         }
     },
     "/sys/bus/spi/drivers/at25/spi22.0/eeprom": {
         "CCIN": ["5CF8"],
         "VINI": {
-            "PN": [48, 51, 85, 72, 48, 57, 56]
+            "FN": [48, 51, 85, 72, 48, 57, 56]
         }
     },
     "/sys/bus/spi/drivers/at25/spi32.0/eeprom": {
         "CCIN": ["5CF8"],
         "VINI": {
-            "PN": [48, 51, 85, 72, 48, 57, 56]
+            "FN": [48, 51, 85, 72, 48, 57, 56]
         }
     },
     "/sys/bus/spi/drivers/at25/spi42.0/eeprom": {
         "CCIN": ["5CF8"],
         "VINI": {
-            "PN": [48, 51, 85, 72, 48, 57, 56]
+            "FN": [48, 51, 85, 72, 48, 57, 56]
         }
     },
     "/sys/bus/spi/drivers/at25/spi52.0/eeprom": {
         "CCIN": ["5CF8"],
         "VINI": {
-            "PN": [48, 51, 85, 72, 48, 57, 56]
+            "FN": [48, 51, 85, 72, 48, 57, 56]
         }
     },
     "/sys/bus/spi/drivers/at25/spi62.0/eeprom": {
         "CCIN": ["5CF8"],
         "VINI": {
-            "PN": [48, 51, 85, 72, 48, 57, 56]
+            "FN": [48, 51, 85, 72, 48, 57, 56]
         }
     },
     "/sys/bus/spi/drivers/at25/spi72.0/eeprom": {
         "CCIN": ["5CF8"],
         "VINI": {
-            "PN": [48, 51, 85, 72, 48, 57, 56]
+            "FN": [48, 51, 85, 72, 48, 57, 56]
         }
     },
     "/sys/bus/spi/drivers/at25/spi82.0/eeprom": {
         "CCIN": ["5CF8"],
         "VINI": {
-            "PN": [48, 51, 85, 72, 48, 57, 56]
+            "FN": [48, 51, 85, 72, 48, 57, 56]
         }
     },
     "/sys/bus/i2c/drivers/at24/8-0051/eeprom": {
         "VINI": {
-            "PN": [48, 51, 82, 86, 50, 57, 48]
+            "FN": [48, 51, 82, 86, 50, 57, 48]
         }
     }
 }
diff --git a/vpd-manager/include/constants.hpp b/vpd-manager/include/constants.hpp
index f71b18e..e605cd1 100644
--- a/vpd-manager/include/constants.hpp
+++ b/vpd-manager/include/constants.hpp
@@ -139,6 +139,7 @@
 constexpr auto kwdHW = "HW";
 constexpr auto kwdIM = "IM";
 constexpr auto kwdPN = "PN";
+constexpr auto kwdFN = "FN";
 constexpr auto recVSYS = "VSYS";
 constexpr auto recVCEN = "VCEN";
 constexpr auto locationCodeInf = "com.ibm.ipzvpd.Location";
diff --git a/vpd-manager/src/manager.cpp b/vpd-manager/src/manager.cpp
index fdc0463..1983029 100644
--- a/vpd-manager/src/manager.cpp
+++ b/vpd-manager/src/manager.cpp
@@ -397,14 +397,14 @@
                     continue;
                 }
 
-                // Get current Part number.
+                // Get current FRU Part number.
                 auto l_retVal = dbusUtility::readDbusProperty(
                     constants::pimServiceName, l_inventoryPath,
-                    constants::viniInf, constants::kwdPN);
+                    constants::viniInf, constants::kwdFN);
 
-                auto l_ptrToPn = std::get_if<types::BinaryVector>(&l_retVal);
+                auto l_ptrToFn = std::get_if<types::BinaryVector>(&l_retVal);
 
-                if (!l_ptrToPn)
+                if (!l_ptrToFn)
                 {
                     o_failedPathList.push_back(l_fruPath);
                     continue;
@@ -412,7 +412,7 @@
 
                 types::BinaryVector l_binaryKwdValue =
                     l_kwdValue.get<types::BinaryVector>();
-                if (l_binaryKwdValue == (*l_ptrToPn))
+                if (l_binaryKwdValue == (*l_ptrToFn))
                 {
                     continue;
                 }
@@ -427,27 +427,27 @@
                     continue;
                 }
 
-                // update the Asset interface PN explicitly
+                // update the Asset interface Spare part number explicitly.
                 if (!dbusUtility::callPIM(types::ObjectMap{
                         {l_inventoryPath,
-                         {{constants::viniInf,
-                           {{"PartNumber",
+                         {{constants::assetInf,
+                           {{"SparePartNumber",
                              std::string(l_binaryKwdValue.begin(),
                                          l_binaryKwdValue.end())}}}}}}))
                 {
                     logging::logMessage(
-                        "Updating PN under Asset interface failed for path [" +
+                        "Updating Spare Part Number under Asset interface failed for path [" +
                         l_inventoryPath + "]");
                 }
 
                 // Just needed for logging.
-                std::string l_initialPartNum((*l_ptrToPn).begin(),
-                                             (*l_ptrToPn).end());
+                std::string l_initialPartNum((*l_ptrToFn).begin(),
+                                             (*l_ptrToFn).end());
                 std::string l_finalPartNum(l_binaryKwdValue.begin(),
                                            l_binaryKwdValue.end());
                 logging::logMessage(
-                    "Part number updated for path [" + l_inventoryPath + "]" +
-                    "From [" + l_initialPartNum + "]" + " to [" +
+                    "FRU Part number updated for path [" + l_inventoryPath +
+                    "]" + "From [" + l_initialPartNum + "]" + " to [" +
                     l_finalPartNum + "]");
             }
         }