diff --git a/proto/aquila/action_execute.proto b/proto/aquila/action_execute.proto
index d3148d4..d70bb1a 100644
--- a/proto/aquila/action_execute.proto
+++ b/proto/aquila/action_execute.proto
@@ -5,7 +5,8 @@ option ruby_package = "Tucana::Aquila";
 package aquila;
 
 message ActionCallRequest {
-  repeated string parameters = 1;
+  string identifier = 1;
+  repeated string parameters = 2;
 }
 
 message ActionCallResponse {
@@ -16,11 +17,12 @@ message ActionResult {
   repeated string result = 1;
 }
 
-message ActionResultRequest {}
+message ActionResultRequest {
+  string execution_identifier = 1;
+}
 
 message ActionResultResponse {
-  string execution_identifier = 1;
-  optional ActionResult action_result = 2;
+  optional ActionResult action_result = 1;
 }
 
 service ActionCallService {
diff --git a/proto/aquila/transfer.proto b/proto/aquila/transfer.proto
index 8e7eb1a..afd8a94 100644
--- a/proto/aquila/transfer.proto
+++ b/proto/aquila/transfer.proto
@@ -18,7 +18,8 @@ message InformationResponse {
 
 message ActionExecuteRequest {
   string execution_identifier = 1;
-  repeated string parameters = 2;
+  string function_identifier = 2;
+  repeated string parameters = 3;
 }
 
 message ActionExecuteResponse {