diff --git a/const.hpp b/const.hpp
index 591043e..ac8dafe 100644
--- a/const.hpp
+++ b/const.hpp
@@ -66,6 +66,9 @@
 using namespace std::string_literals;
 constexpr auto pimPath = "/xyz/openbmc_project/inventory";
 constexpr auto pimIntf = "xyz.openbmc_project.Inventory.Manager";
+constexpr auto kwdVpdInf = "com.ibm.ipzvpd.VINI";
+constexpr auto memVpdInf = "com.ibm.ipzvpd.VINI";
+constexpr auto ipzVpdInf = "com.ibm.ipzvpd.";
 
 namespace lengths
 {