404 error response

[Md Abdul Aowal]

var campaignData = new
            {
                campaign = new
                {
                    name = "My Campaign",
                    advertisingChannelType = "SEARCH",
                    status = "PAUSED",
                    startDate = "2023-06-01",
                    endDate = "2023-06-30",
                    budget = new
                    {
                        name = "My Budget",
                        deliveryMethod = "STANDARD",
                        amountMicros = 50000000
                    }
                }
            };

            using (var client = new HttpClient())
            {
                client.DefaultRequestHeaders.Authorization = new 
AuthenticationHeaderValue("Bearer", accessToken);

                var requestUrl = 
$"https://googleads.googleapis.com/v11/customers/{customerId}/campaigns";;
                var content = new 
StringContent(JsonConvert.SerializeObject(campaignData), Encoding.UTF8, 
"application/json");

                var response = await client.PostAsync(requestUrl, content);

                if (response.IsSuccessStatusCode)
                {
                    var responseContent = await 
response.Content.ReadAsStringAsync();
                    Console.WriteLine("Campaign created successfully.");
                    Console.WriteLine(responseContent);
                }
                else
                {
                    Console.WriteLine($"Failed to create campaign. Status 
code: {response.StatusCode}");
                }
i gor 404 error response, can you please provide me google ads related rest 
api list with documentation?
thank

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