SharePoint REST API _api/sitepages/pages(49)/SavePageAsDraft Call Hangs Indefinitely

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Posted on by Noek

Hi everyone,

I'm encountering an issue with the SharePoint Online REST API when trying to save a page using the following endpoint:

_api/sitepages/pages(49)/SavePageAsDraft

Problem:

The API call keeps running indefinitely and doesn't complete, even after several hours. Here are the details of my setup:

API Call Body:
```
 
```
json

{ "__metadata": { "type": "SP.Data.SitePagesItem" }, "CanvasContent1": "@{outputs('Translate_text_into_another_language_2')?['body/responsev2/predictionOutput/text']}" }

(The CanvasContent1 value resolves to a string dynamically in my workflow.)
Headers:
- Authorization: Bearer <token>
- Content-Type: application/json;odata=verbose
- Accept: application/json;odata=verbose

What I’ve Tried:

Testing with a minimal payload like:
```
 
```
json

{ "__metadata": { "type": "SP.Data.SitePagesItem" }, "CanvasContent1": "Test content" }

The issue persists even with this simplified payload.
Ensuring that my access token is valid and has the necessary permissions.
Verifying that other API calls (like GET requests to _api/sitepages) work fine.
Setting timeouts on my client to avoid indefinite hanging (though this doesn’t solve the root issue).

Questions:

Has anyone encountered similar issues with the SavePage API endpoint in SharePoint Online?
Are there any specific configurations or known limitations of this endpoint that might cause it to hang?
Could this be related to the size or complexity of the CanvasContent1 field? If so, how can I debug or optimize it?

Any guidance or suggestions would be greatly appreciated!

Thanks in advance for your help!

Categories:

Building flows

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Expiscornovus 33,830 Most Valuable Professional on at

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Hi @Noek,

Can you try a different value in the type property of the __metadata?

Try the below instead:

"__metadata":{"type":"SP.Publishing.SitePage"}

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Noek 29 on at

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Hi @Expiscornovus,

I changed this and still the flow is running a long time.

I'm doing it with th code below. i'm going to let my flow run and see which error I'm getting afterwards. Or if you have any other tips.

"__metadata":{"type":"SP.Publishing.SitePage"} "CanvasContent1": "Test content"

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Expiscornovus 33,830 Most Valuable Professional on at

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Hi @Noek,

You are missing a comma between the two properties. Additionally, the CanvasContent1 property expects an array with sections and web parts for the page.

Below is an example which adds a Text web part with some text.

{ "__metadata": { "type": "SP.Publishing.SitePage" }, "CanvasContent1":"[{\"controlType\":4,\"id\":\"ed2476c7-994a-4a07-a322-8afe873c05f2\",\"innerHTML\":\"<p>Power Automate ftw!<br></p>\",\"position\":{\"zoneIndex\":1,\"sectionIndex\":1,\"controlIndex\":0.5,\"sectionFactor\":8,\"layoutIndex\":1},\"addedFromPersistedData\":true}]", "Title": "Page with Text Web Part" }

Happy to help out 😁

I share more #PowerAutomate and #SharePointOnline content on my Blog, Bluesky profile or Youtube Channel

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