Updating Document Library Title HTTP Request

[Marty_88]

Hi,

I am trying to update a Document Library name/title via the HTTP Request following the Working with lists and list items with REST | Microsoft Docs 

POST https://{site_url}/_api/web/lists(guid'{list_guid}')
Authorization: "Bearer " + accessToken
Accept: "application/json;odata=verbose"
Content-Type: "application/json"
Content-Length: {length of request body as integer}
If-Match: "{etag or *}"
X-HTTP-Method: "MERGE"
X-RequestDigest: "{form_digest_value}"

{
  "__metadata": {
    "type": "SP.List"
  },
  "Title": "New title"
}

I have done this in flow as below; 

But get this error below;

When I run the step without the body i see that I am getting an correct response back from SP..

Any ideas?

Thanks

[shoog]

We can only use the GetByTitle function in a GET action.

You should split your action into two seperate actions:

The first to get the item ID you want to modify using the GetByTitle function,

the second to update the item but with the _api/Web/lists(guid'<guid>') url where <guid> refers to the Id field of the output of the first action.

[Marty_88]

Hi @shoog 
Thanks for this, I have now been able to capture the ID from the first action, but when i have updated the second action I also still have an error;

Error

Thanks for your time

[shoog]

You could modify the body of your request to something like this (please not the single quotes in stead of double), type should be SP.List

{
  '__metadata': {
    'type':'SP.List'
  },
  'Title':'<your title here>'
}

[Marty_88]

Hi @shoog 

even with single quotes it has the same error...

[shoog]

Sorry for the late reply.

Please revert to the Content-Type header to verbose like in your original screenshot, right now it defaults to basic odata, which doesn't include the metadata tag.