I'm quite new to Sharepoint stuff, and currently am trying to interact with the REST API. I have been able to get all kinds of data without much problems by sending GET reuqests, but sending POST requests has not worked so far (unless sending a POST request to get the context info).

Basically I am trying to add a subsite to my existing site, following the examples from https://msdn.microsoft.com/EN-US/library/office/jj164022.aspx#WritingData ("Section: Create a Site with REST") - however I am using Java as my choice of development language.

First I sent a post request to /_api/contextinfo to get the formDigestValue. I include this as a header for the variable "X-RequestDigest". Is this correct way of approaching things?

Afterwards I manage to send the following POST request - but constantly get a 400 Bad Request error.

******** LOGGING REQUEST ******** 
Request Method: POST 
Request URI: https://<site_url_hidden>/_api/web/webinfos/add 

Request Headers: 

{"parameters": {
    "description":"REST created web",
Response Status: 400

The request seems to match what the example is showing, as far as I can see... so currently am pretty clueless on what could be wrong.

Appreciate any help, tips, etc...

EDIT: The error I get is:

"value":"A value was encountered that has a type name that is incompatible with the metadata. 
The value specified its type as 'SP.WebInfoCreationInformation', but the type specified in the metadata is 'SP.WebCreationInformation'."

After changing the type to SP.WebCreationInformation I get the following error:

,"value":"The property 'language' does not exist on type 'SP.WebCreationInformation'. Make sure to only use property names that are defined by the type."}

EDIT2: Seems like the properties are case sensitive. Sending the correct values has now fixed the problem of 400 - Bad request. Now getting a 401 Unauthorized instead.


  • Helpful? sharepoint.stackexchange.com/questions/152778/…
    – Akhoy
    Aug 10, 2015 at 14:06
  • Not sure... my headers look correct. I'm getting also a different error. But I'll try the code in the example and see if I can get anywhere with it. Aug 10, 2015 at 15:31
  • are you using JS to make these calls? Aug 10, 2015 at 18:23
  • No - using Java. But I'll give it a try with JS tomorrow morning just to see if it works or not... at this point I'd be happy just to get a POST request go through. :) Aug 10, 2015 at 19:25
  • Did not manage to send requests via JS. Keep getting 403 error and couldn't figure out how to get past it. Got info on error messages when sending via Java - added to original post. Investigation continues. Aug 11, 2015 at 7:23


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