@DELETE method is not supporting(Non-body HTTP method cannot contain @Body or @TypedOutput.)

I've used this official workaround recently:

@HTTP(method = "DELETE", path = "/job/deletejob", hasBody = true)
Observable<JobDeleteResponseModel> jobDelete(@Body JobDeleteRequestModel model);

try this it's work

@HTTP(method = "DELETE", path = "api/v3/delete", hasBody = true)
Call<ResponseBody> RESPONSE_BODY_CALL(@Header("Authorization") String authorization, @Body HashMap<String, List> stringListHashMap);

or check https://github.com/square/retrofit/issues/974


You need to specify parameters
method, path, hasBody

Kotlin way

@HTTP(method = "DELETE", path = "event/eventRemovePicture", hasBody = true)
fun callDeleteImage(
    @Body body: RequestBody
): Call<RemoveEventPictureResponse>