diff --git a/README.md b/README.md
index 5fe1dc6..84f8a3a 100644
--- a/README.md
+++ b/README.md
@@ -136,7 +136,7 @@ The app exposes the following [gRPC](https://grpc.io/) services :
 
     ```json
     {
-        "userUuid": "80c9bb02-0931-4a1d-bea6-22d358992245",
+        "userId": "80c9bb02-0931-4a1d-bea6-22d358992245",
         "passenger": true,
         "seatsPassenger": 1,
         "frequency": "RECURRRENT",
@@ -179,7 +179,7 @@ The app exposes the following [gRPC](https://grpc.io/) services :
     -   frequency: `PUNCTUAL` or `RECURRENT`
     -   fromDate: start date for recurrent ad, carpool date for punctual ad
     -   toDate: end date for recurrent ad, same as fromDate for punctual ad
-    -   schedule: an object with the departure time for each carpooled day in the week
+    -   schedule: an object with the departure time for each carpooled day in the week (only the carpooled day for punctual ad)
     -   marginDurations (optional): an object with the margin duration (in seconds) for each carpooled day in the week, eg:
 
             {
@@ -191,7 +191,7 @@ The app exposes the following [gRPC](https://grpc.io/) services :
     -   seatsProposed (optional): number of seats proposed as driver
     -   seatsRequested (optional): number of seats requested as passenger
     -   strict (boolean, optional): if set to true, allow matching only with similar frequency ads
-    -   waypoints: an array of addresses that represent the waypoints of the journey (only first and last waypoints are used for passenger ads). Note that positions **must** be consecutives
+    -   waypoints: an array of addresses that represent the waypoints of the journey (only first and last waypoints are used for passenger ads). Note that positions are **required** and **must** be consecutives
 
     Default values must be set in `.env` file.