Creating site is working sometimes, why

[nareshvy]

Hi I am creating a site here, but this sometimes works and sometimes not working.
try {
HttpClient client = new HttpClient();

String loginData = "username=admin&password=admin";
PostMethod loginPost = new PostMethod(
"http://127.0.0.1:8090/share/page/dologin");
loginPost.setRequestHeader("Content-Type",
"application/x-www-form-urlencoded");
loginPost.setRequestEntity(new StringRequestEntity(loginData,
"text/plain", "UTF-8"));

System.out.println("dologin script status: "
+ client.executeMethod(loginPost));

GetMethod authenticationGet = new GetMethod(
"http://127.0.0.1:8090/share/service/modules/authenticated?a=user");
System.out.println("User is authenticated script status : "
+ client.executeMethod(authenticationGet));

PostMethod createSitePost = new PostMethod(
"http://127.0.0.1:8090/share/service/modules/create-site");
String shortName = "TestSiteFromCodeONeTwo";
JSONObject siteObject = new JSONObject();

siteObject.put("shortName", shortName);
siteObject.put("description", shortName);
siteObject.put("title", shortName);
siteObject.put("Visiblity", "Public");
siteObject.put("sitePreset", "site-dashboard");

createSitePost.setRequestEntity(new StringRequestEntity(siteObject
.toString(), "application/json", "UTF-8"));
createSitePost.setRequestHeader("Accept", "application/json");
// createSitePost.setRequestHeader("Content-Type", "application/json");

int status = client.executeMethod(createSitePost);
System.out.println("create a site script status :: " + status);

getting error 

create a site script status :: 400

[ddraper]

There should be more information in the response indicating why it failed. A 400 response code suggests that there was something wrong with your request - what is the response message? Is it possible that you're trying to create a site using a shortName attribute that has already been used?

[nareshvy]

create a site script status :: 400{
"status" :
{
"code" : 400,
"name" : "Bad Request",
"description" : "Request sent by the client was syntactically incorrect."
},

"message" : "error.unableToCreate",
"exception" : "",

"callstack" :
[

],

"server" : "Spring WebScripts - v6.5.0 schema 1,000",
"time" : "Dec 9, 2016 9:34:15 PM"
}

[ddraper]

What are the actual values that you're submitting when you make that request? Is it possible that you're submitting invalid characters, etc? For example there are a number of characters that can't be used for the shortName attribute.