Retrofit 2 not sending data when ProGuard is enabled

I finally managed to make it work. Here is the proguard configuration regarding Retrofit 2

# Retrofit
-dontwarn retrofit2.**
-dontwarn org.codehaus.mojo.**
-keep class retrofit2.** { *; }
-keepattributes Signature
-keepattributes Exceptions
-keepattributes *Annotation*

-keepattributes RuntimeVisibleAnnotations
-keepattributes RuntimeInvisibleAnnotations
-keepattributes RuntimeVisibleParameterAnnotations
-keepattributes RuntimeInvisibleParameterAnnotations

-keepattributes EnclosingMethod

-keepclasseswithmembers class * {
    @retrofit2.* <methods>;
}

-keepclasseswithmembers interface * {
    @retrofit2.* <methods>;
}

Thanks @xudshen

UPDATE

The main problem: I used proguard-android-optimize So I should added:

-keepclasseswithmembers class * {
    @retrofit2.http.* <methods>;
}

I also switched back to the regular Retrofit 2 proguard config provided by square :

# Platform calls Class.forName on types which do not exist on Android to determine platform.
-dontnote retrofit2.Platform
# Platform used when running on RoboVM on iOS. Will not be used at runtime.
-dontnote retrofit2.Platform$IOS$MainThreadExecutor
# Platform used when running on Java 8 VMs. Will not be used at runtime.
-dontwarn retrofit2.Platform$Java8
# Retain generic type information for use by reflection by converters and adapters.
-keepattributes Signature
# Retain declared checked exceptions for use by a Proxy instance.
-keepattributes Exceptions

Adding to @Romain's answer You Need to add to proguard file

-keepclasseswithmembers class * {
    @retrofit2.http.* <methods>;
}

If you are using @Header, @Query...

Reference from here Retrofit2 proguard remove param

finally i find. just try this if you use Gson , add this to retrofit pro-guard :

-keepclassmembers,allowobfuscation class * {
  @com.google.gson.annotations.SerializedName <fields>;
} 

then use @SerializedName("name") in your model .kotlin example:

class PaymentRequestModel (
    @SerializedName("name")
    @Expose
    var name : String = "",
}