diff --git a/const.hpp b/const.hpp
index eb4faa3..6b27977 100644
--- a/const.hpp
+++ b/const.hpp
@@ -90,6 +90,7 @@
 constexpr auto errIntfForBusFailure = "com.ibm.VPD.Error.DbusFailure";
 constexpr auto errIntfForInvalidSystemType =
     "com.ibm.VPD.Error.UnknownSytemType";
+constexpr auto errIntfForGpioError = "com.ibm.VPD.Error.GPIOError";
 constexpr auto motherBoardInterface =
     "xyz.openbmc_project.Inventory.Item.Board.Motherboard";
 constexpr auto systemVpdFilePath = "/sys/bus/i2c/drivers/at24/8-0050/eeprom";