diff --git a/FmpDevicePkg/Include/LastAttemptStatus.h b/FmpDevicePkg/Include/LastAttemptStatus.h
new file mode 100644
index 0000000000..0dcd1ef716
--- /dev/null
+++ b/FmpDevicePkg/Include/LastAttemptStatus.h
@@ -0,0 +1,81 @@
+/** @file
+ Defines last attempt status code ranges within the UEFI Specification
+ defined unsuccessful vendor range.
+
+ Copyright (c) Microsoft Corporation.
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef __LAST_ATTEMPT_STATUS_H__
+#define __LAST_ATTEMPT_STATUS_H__
+
+///
+/// Last Attempt Status Unsuccessful Vendor Range Map
+///
+/// Update this map any time new ranges are added. Pre-existing range definitions cannot be modified
+/// to keep status code definitions consistent over time.
+///
+/// START | END | Usage
+/// ------------------------------------------------------------------|
+/// 0x1000 | 0x17FF | FmpDevicePkg |
+/// 0x1000 | 0x107F | FmpDxe driver |
+/// 0x1080 | 0x109F | FmpDependencyLib |
+/// 0x10A0 | 0x10BF | FmpDependencyCheckLib |
+/// 0x10C0 | 0x17FF | Unused. Available for future expansion. |
+/// 0x1800 | 0x1FFF | FmpDeviceLib instances implementation |
+/// 0x2000 | 0x3FFF | Unused. Available for future expansion. |
+///
+
+///
+/// The minimum value of the FMP reserved range.
+///
+#define LAST_ATTEMPT_STATUS_FMP_RESERVED_MIN_ERROR_CODE_VALUE 0x1000
+
+///
+/// The maximum value of the FMP reserved range.
+///
+#define LAST_ATTEMPT_STATUS_FMP_RESERVED_MAX_ERROR_CODE_VALUE 0x1FFF
+
+///
+/// The minimum value allowed for FmpDxe driver-specific errors.
+///
+#define LAST_ATTEMPT_STATUS_DRIVER_MIN_ERROR_CODE_VALUE 0x1000
+
+///
+/// The maximum value allowed for FmpDxe driver-specific errors.
+///
+#define LAST_ATTEMPT_STATUS_DRIVER_MAX_ERROR_CODE_VALUE 0x107F
+
+///
+/// The minimum value allowed for FmpDependencyLib related errors.
+///
+#define LAST_ATTEMPT_STATUS_FMP_DEPENDENCY_LIB_MIN_ERROR_CODE_VALUE 0x1080
+
+///
+/// The maximum value allowed for FmpDependencyLib related errors.
+///
+#define LAST_ATTEMPT_STATUS_FMP_DEPENDENCY_LIB_MAX_ERROR_CODE_VALUE 0x109F
+
+///
+/// The minimum value allowed for FmpDependencyCheckLib related errors.
+///
+#define LAST_ATTEMPT_STATUS_FMP_DEPENDENCY_CHECK_LIB_MIN_ERROR_CODE_VALUE 0x10A0
+
+///
+/// The maximum value allowed for FmpDependencyCheckLib related errors.
+///
+#define LAST_ATTEMPT_STATUS_FMP_DEPENDENCY_CHECK_LIB_MAX_ERROR_CODE_VALUE 0x10BF
+
+///
+/// The minimum value allowed for FMP device library errors.
+///
+#define LAST_ATTEMPT_STATUS_DEVICE_LIBRARY_MIN_ERROR_CODE_VALUE 0x1800
+
+///
+/// The maximum value allowed for FMP device library errors.
+///
+#define LAST_ATTEMPT_STATUS_DEVICE_LIBRARY_MAX_ERROR_CODE_VALUE 0x1FFF
+
+#endif
diff --git a/FmpDevicePkg/PrivateInclude/FmpLastAttemptStatus.h b/FmpDevicePkg/PrivateInclude/FmpLastAttemptStatus.h
new file mode 100644
index 0000000000..de865a2e3d
--- /dev/null
+++ b/FmpDevicePkg/PrivateInclude/FmpLastAttemptStatus.h
@@ -0,0 +1,81 @@
+/** @file
+ Defines private last attempt status codes used in FmpDevicePkg.
+
+ Copyright (c) Microsoft Corporation.
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef __FMP_LAST_ATTEMPT_STATUS_H__
+#define __FMP_LAST_ATTEMPT_STATUS_H__
+
+///
+/// Last attempt status codes defined for additional granularity in FmpDevicePkg components.
+///
+/// These codes are defined within the last attempt status FMP reserved range which extends from
+/// LAST_ATTEMPT_STATUS_FMP_RESERVED_MIN_ERROR_CODE_VALUE to LAST_ATTEMPT_STATUS_FMP_RESERVED_MAX_ERROR_CODE_VALUE.
+///
+/// The following last attempt status code ranges are currently defined for the corresponding component:
+/// * LAST_ATTEMPT_STATUS_DRIVER - FMP driver
+/// * LAST_ATTEMPT_STATUS_DEPENDENCY - FMP dependency functionality
+///
+/// Future last attempt status code additions in FmpDevicePkg should be added as follows:
+/// * FmpDxe driver: Onto the end of the LAST_ATTEMPT_STATUS_DRIVER_ERROR range
+/// * FMP dependency functionality: Onto the end of the LAST_ATTEMPT_STATUS_DEPENDENCY_ERROR range
+/// * Other components: Add a new range onto the end of the last existing range in the enum within the limits of
+/// [LAST_ATTEMPT_STATUS_FMP_RESERVED_MIN_ERROR_CODE_VALUE,LAST_ATTEMPT_STATUS_FMP_RESERVED_MAX_ERROR_CODE_VALUE]
+///
+/// The value of pre-existing last attempt status codes should never be modified to ensure the values remain
+/// consistent over time.
+///
+enum LAST_ATTEMPT_STATUS_EXPANDED_ERROR_LIST
+{
+ ///
+ /// Last attempt status codes used in FmpDxe
+ ///
+ LAST_ATTEMPT_STATUS_DRIVER_ERROR_GET_FMP_HEADER = LAST_ATTEMPT_STATUS_DRIVER_MIN_ERROR_CODE_VALUE,
+ LAST_ATTEMPT_STATUS_DRIVER_ERROR_PROGRESS_CALLBACK_ERROR ,
+ LAST_ATTEMPT_STATUS_DRIVER_ERROR_CHECK_POWER_API ,
+ LAST_ATTEMPT_STATUS_DRIVER_ERROR_CHECK_SYS_THERMAL_API ,
+ LAST_ATTEMPT_STATUS_DRIVER_ERROR_THERMAL ,
+ LAST_ATTEMPT_STATUS_DRIVER_ERROR_CHECK_SYS_ENV_API ,
+ LAST_ATTEMPT_STATUS_DRIVER_ERROR_SYSTEM_ENV ,
+ LAST_ATTEMPT_STATUS_DRIVER_ERROR_GET_FMP_HEADER_SIZE ,
+ LAST_ATTEMPT_STATUS_DRIVER_ERROR_GET_ALL_HEADER_SIZE ,
+ LAST_ATTEMPT_STATUS_DRIVER_ERROR_GET_FMP_HEADER_VERSION ,
+ LAST_ATTEMPT_STATUS_DRIVER_ERROR_IMAGE_NOT_PROVIDED ,
+ LAST_ATTEMPT_STATUS_DRIVER_ERROR_IMAGE_NOT_UPDATABLE ,
+ LAST_ATTEMPT_STATUS_DRIVER_ERROR_INVALID_CERTIFICATE ,
+ LAST_ATTEMPT_STATUS_DRIVER_ERROR_INVALID_IMAGE_INDEX ,
+ LAST_ATTEMPT_STATUS_DRIVER_ERROR_INVALID_KEY_LENGTH ,
+ LAST_ATTEMPT_STATUS_DRIVER_ERROR_INVALID_KEY_LENGTH_VALUE ,
+ LAST_ATTEMPT_STATUS_DRIVER_ERROR_VERSION_TOO_LOW ,
+ LAST_ATTEMPT_STATUS_DRIVER_ERROR_DEVICE_LOCKED ,
+ LAST_ATTEMPT_STATUS_DRIVER_ERROR_IMAGE_AUTH_FAILURE ,
+ LAST_ATTEMPT_STATUS_DRIVER_ERROR_PROTOCOL_ARG_MISSING ,
+
+ ///
+ /// Last attempt status codes used in FmpDependencyLib
+ ///
+ LAST_ATTEMPT_STATUS_DEPENDENCY_LIB_ERROR_GET_DEPEX_FAILURE = LAST_ATTEMPT_STATUS_FMP_DEPENDENCY_LIB_MIN_ERROR_CODE_VALUE,
+ LAST_ATTEMPT_STATUS_DEPENDENCY_LIB_ERROR_NO_END_OPCODE ,
+ LAST_ATTEMPT_STATUS_DEPENDENCY_LIB_ERROR_UNKNOWN_OPCODE ,
+ LAST_ATTEMPT_STATUS_DEPENDENCY_LIB_ERROR_GUID_BEYOND_DEPEX ,
+ LAST_ATTEMPT_STATUS_DEPENDENCY_LIB_ERROR_VERSION_BEYOND_DEPEX ,
+ LAST_ATTEMPT_STATUS_DEPENDENCY_LIB_ERROR_VERSION_STR_BEYOND_DEPEX ,
+ LAST_ATTEMPT_STATUS_DEPENDENCY_LIB_ERROR_FMP_NOT_FOUND ,
+ LAST_ATTEMPT_STATUS_DEPENDENCY_LIB_ERROR_PUSH_FAILURE ,
+ LAST_ATTEMPT_STATUS_DEPENDENCY_LIB_ERROR_POP_FAILURE ,
+
+ ///
+ /// Last attempt status codes used in FmpDependencyCheckLib
+ ///
+ LAST_ATTEMPT_STATUS_DEPENDENCY_CHECK_LIB_ERROR_FMP_PROTOCOL_NOT_FOUND = LAST_ATTEMPT_STATUS_FMP_DEPENDENCY_CHECK_LIB_MIN_ERROR_CODE_VALUE,
+ LAST_ATTEMPT_STATUS_DEPENDENCY_CHECK_LIB_ERROR_MEM_ALLOC_FMP_INFO_BUFFER_FAILED ,
+ LAST_ATTEMPT_STATUS_DEPENDENCY_CHECK_LIB_ERROR_MEM_ALLOC_DESC_VER_BUFFER_FAILED ,
+ LAST_ATTEMPT_STATUS_DEPENDENCY_CHECK_LIB_ERROR_MEM_ALLOC_DESC_SIZE_BUFFER_FAILED ,
+ LAST_ATTEMPT_STATUS_DEPENDENCY_CHECK_LIB_ERROR_MEM_ALLOC_FMP_VER_BUFFER_FAILED
+};
+
+#endif