diff --git a/libteec/include/tee_client_api.h b/libteec/include/tee_client_api.h
index 9adbba80..801b7a67 100644
--- a/libteec/include/tee_client_api.h
+++ b/libteec/include/tee_client_api.h
@@ -159,6 +159,17 @@ extern "C" {
  *                              generated output.
  * TEEC_ERROR_TARGET_DEAD       Trusted Application has panicked
  *                              during the operation.
+ * TEE_ERROR_EXTERNAL_CANCEL    Defined by the Trusted User Interface
+ *                              specification: An external event has caused a
+ *                              User Interface operation to be aborted.
+ * TEE_ERROR_OVERFLOW           Internal TEE error – documented for completeness
+ * TEE_ERROR_TARGET_DEAD        The Trusted Application has terminated.
+ * TEEC_ERROR_TARGET_DEAD       The Trusted Application has terminated.
+ * TEE_ERROR_STORAGE_NO_SPACE   Internal TEE error – documented for completeness
+ * TEE_ERROR_MAC_INVALID        Internal TEE error – documented for completeness
+ * TEE_ERROR_SIGNATURE_INVALID  Internal TEE error – documented for completeness
+ * TEE_ERROR_TIME_NOT_SET       Internal TEE error – documented for completeness
+ * TEE_ERROR_TIME_NEEDS_RESET   Internal TEE error – documented for completeness
  */
 
 /**
@@ -186,6 +197,15 @@ extern "C" {
 #define TEEC_ERROR_EXTERNAL_CANCEL         0xFFFF0011
 #define TEEC_ERROR_TARGET_DEAD             0xFFFF3024
 #define TEEC_ERROR_STORAGE_NO_SPACE        0xFFFF3041
+#define TEE_ERROR_EXTERNAL_CANCEL          0xFFFF0011
+#define TEE_ERROR_OVERFLOW                 0xFFFF300F
+#define TEE_ERROR_TARGET_DEAD              0xFFFF3024
+#define TEEC_ERROR_TARGET_DEAD             0xFFFF3024
+#define TEE_ERROR_STORAGE_NO_SPACE         0xFFFF3041
+#define TEE_ERROR_MAC_INVALID              0xFFFF3071
+#define TEE_ERROR_SIGNATURE_INVALID        0xFFFF3072
+#define TEE_ERROR_TIME_NOT_SET             0xFFFF5000
+#define TEE_ERROR_TIME_NEEDS_RESET         0xFFFF5001
 
 /**
  * Function error origins, of type TEEC_ErrorOrigin. These indicate where in