diff --git a/action_processor.h b/action_processor.h
index 256648d..3c9c262 100644
--- a/action_processor.h
+++ b/action_processor.h
@@ -34,8 +34,8 @@
   kActionCodeInstallDeviceOpenError = 7,
   kActionCodeKernelDeviceOpenError = 8,
   kActionCodeDownloadTransferError = 9,
-  kActionCodeDownloadHashMismatchError = 10,
-  kActionCodeDownloadSizeMismatchError = 11,
+  kActionCodePayloadHashMismatchError = 10,
+  kActionCodePayloadSizeMismatchError = 11,
   kActionCodeDownloadPayloadVerificationError = 12,
   kActionCodeDownloadNewPartitionInfoError = 13,
   kActionCodeDownloadWriteError = 14,
@@ -44,6 +44,16 @@
   kActionCodeSignedDeltaPayloadExpectedError = 17,
   kActionCodeDownloadPayloadPubKeyVerificationError = 18,
   kActionCodePostinstallBootedFromFirmwareB = 19,
+  kActionCodeDownloadStateInitializationError = 20,
+  kActionCodeDownloadInvalidManifest = 21,
+  kActionCodeDownloadSignatureMissingInManifest = 22,
+  kActionCodeDownloadManifestParseError = 23,
+  kActionCodeDownloadManifestSignatureError = 24,
+  kActionCodeDownloadManifestSignatureVerificationError = 25,
+  kActionCodeDownloadManifestSignatureMismatch = 26,
+  kActionCodeDownloadOperationHashVerificationError = 27,
+  kActionCodeDownloadOperationExecutionError = 28,
+  kActionCodeDownloadOperationHashMismatch = 29,
 
   // use the 2xx range for errors in Omaha response.
   kActionCodeOmahaRequestEmptyResponseError = 200,