Question: How to update list item's multichoice field?

[Karthickraju2690]

I can create list item through REST API by using documentation. But, when I try to create list item with Multichoice field,

    {'__metadata': {'type': 'SP.Data.MyListItem'}, 'Title': 'Test Task',
                       'CategoryDescription': 'This is a test Task',                               
                       'Multichoicefield':{
                           '__metadata' : {'type' : 'Collection(Edm.String)' },
                           'results': ['value1', 'value2']
                           }
                       }

On running with above payload, receiving An open collection property 'Multichoicefield' was found. In OData, open collection properties are not supported.", "400 Client Error: Bad Request for url:

Can you provide example of how to create?

[msft-github-bot]

Thank you for reporting this issue. We will be triaging your incoming issue as soon as possible.

[Jerry0527]

If your list name is "MyList", the type should be type: "SP.Data.MyListListItem"

Here is a demo to create item with multiple choicefield with Rest API for your reference:

<script type="text/javascript">
    $.ajax  
        ({  
        url: _spPageContextInfo.webAbsoluteUrl + "/_api/web/lists/GetByTitle('MyList')/items",  
        type: "POST",  
        data: JSON.stringify  
        ({  
            __metadata:  
            {  
                type: "SP.Data.MyListListItem"  
            },  
            'Title':  "Test Task",
            'CategoryDescription': "This is a test Task",
            'Multichoicefield': {'results': ['Enter Choice #1', 'Enter Choice #2', 'Enter Choice #3']} 
        }),  
        headers:  
        {  
            "Accept": "application/json;odata=verbose",  
            "Content-Type": "application/json;odata=verbose",  
            "X-RequestDigest": $("#__REQUESTDIGEST").val(),  
            "X-HTTP-Method": "POST"  
        },  
        success: function(data, status, xhr)  
        {  
            console.log(data);
        },  
        error: function(xhr, status, error)  
        {  
            console.log(data.responseJSON.error);  
        }  
    });
    
   </script>

[luismanez]

and if memory serves me well, you can see that "type" value if you call:
_/api/lists/getbytitle('MyList')?$select=ListItemEntityTypeFullName

[Karthickraju2690]

Thanks Andrew, actually my list name is different and I am using the correct one which I got with the help of _/api/lists/getbytitle('MyList')?$select=ListItemEntityTypeFullName

I am using Python sharePoint online library -Office365-REST-Python-Client to create new list item. I am able to successfully create new list.

Only when I try to create new list with Multi-choice field, I receive an error
An open collection property 'Multichoicefield' was found. In OData, open collection properties are not supported.", "400 Client Error: Bad Request for url:

Seems like OData stopped supporting this.

Note: Have already tried like 'Multichoicefield': {'results': ['value1', 'value2']}, but couldn't be successful as it throws A value without a type name was found and no expected type is available. When the model is specified, each value in the payload must have a type which can be either specified in the payload, explicitly by the caller or implicitly inferred from the parent value.. so, I had to use 'Multichoicefield':{ '__metadata' : {'type' : 'Collection(Edm.String)' }, 'results': ['value1', 'value2'] }

I've already raised the issue on library's Github page here

[Jerry0527]

You can add a new item with multi choice field in the UI firstly and then check the Json response with Rest:

_api/web/lists/getbyTitle('MyList')/items

Make sure the field name is valid and the value should be mateched in the field settings:

[Karthickraju2690]

I can add new item with multi choice field through UI and below is the detail:

[Jerry0527]

'Multichoicefield': {'results': ['Enter Choice #1', 'Enter Choice #2', 'Enter Choice #3']} works in my side, change fieldname and choice option with yours for a test.

[Karthickraju2690]

I've tried Jerry.

Error is An open collection property 'Multichoicefield' was found. In OData, open collection properties are not supported.", "400 Client Error: Bad Request for url:

It seems like problem is with OData. When do we get this error? On what scenario will this be thrown?

[Jerry0527]

You can test with JavaScript firstly, as I can't reproduce the error you are meeting in my side. Then migrate to Python.

[Karthickraju2690]

I am not much familiar with that.... I can see your code above, but doesn't have authentication part. Can you share complete example to test or if you can share a link that would be helpful

[Jerry0527]

My code snippet above is a complete example....
If you want to learn about call Rest API with Jquey ajax, please refer here:

CRUD Operations On A SharePoint List Using REST API

[msft-github-bot]

Closing issue as "answered". If you encounter similar issue(s), please open up a NEW issue. Thank you.

[msft-github-bot]

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