How to resolve 400 error code, "one or more validation problem"

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Hello,
I am trying to fix a payment Api, I am getting 400 error message, saying that one or more validation issues. What could be my mistake?
below is my code.

var client = new RestClient("https://sandbox-api-d.squadco.com/transaction/initiate");
            
            var keyValues = new Dictionary<string, string>
                            {
                                { "amount", "10000"},
                                { "email" , abc@mail.com},
                                { "currency", "NGN"},
                                { "initiate_type", "inline"},
                                { "transaction_ref" , "34532756YT"},
                                { "callback_url", "https://samplesite.com"}                        
                            };
            
            string JsonBody = JsonConvert.SerializeObject(keyValues);

            var request = new RestRequest();
            request.Method = Method.Post;
            request.AddHeader("Authorization", "sandbox_sk_3fae7c45922315aa8cb2a16db028f50a596d5fbdf351");
            request.AddHeader("Content-Type", "application/json");
            request.AddParameter("application/json", JsonBody, ParameterType.RequestBody);
            RestResponse response = client.Execute(request);

What I have tried:

I tried running the code in postman, and it worked fine.

Posted 10-Dec-22 19:07pm

Member 12652465

Updated 11-Dec-22 4:54am

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OriginalGriff · Answer 1 · 2022-12-10T19:54:00

Look at your code: it doesn't compile.

You declared keyValues as a Dictionary<string, string> but then try to pass it a number of values that aren't strings: 10000, abc@mail.com, 34532756YT
Change those to strings, and it might compile, which will start you towards the next step:

var keyValues = new Dictionary<string, string>
                {
                    { "amount", "10000"},
                    { "email" , "abc@mail.com"},
                    { "currency", "NGN"},
                    { "initiate_type", "inline"},
                    { "transaction_ref" , "34532756YT"},
                    { "callback_url", "https://samplesite.com"}
                };

Or fix the Dictionary so it accepts the right types of value ...