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Power Platform Community / Forums / Power Automate - Building Flows / The Expression is Inva...
Power Automate - Building Flows
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The Expression is Invalid - POST Method for creating a site page

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Posted on by LukeSykes

I'm attempting to build a flow that creates site page when a list item is created.

I'm following a tutorial however when I try to use the following expression in the Uri box under 'Send an HTTP request to SharePoint' it tells me the expression is invalid, even though it works for the guy in the tutorial.

 

_api/web/getfilebyserverrelativeurl('/sites/SPFx/SitePages/OpportunityTemplate.aspx')/copyto('/sites/SPFx/SitePages/@{triggerbody()?['Title']}.aspx')

 

Create SharePoint Site Pages automatically with Power Automate - YouTube

9:00 minutes

 

Can anyone see what i'm doing wrong?

 

LukeSykes_0-1654082472980.png

 

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  • Verified answer
    Expiscornovus Profile Picture
    Expiscornovus 32,908 Most Valuable Professional on at
    Re: The Expression is Invalid - POST Method for creating a site page

    Hi @LukeSykes,

     

    Did you copy/paste the value into the expression editor?

     

    If so, can you try directly copy pasting your value into the Uri field instead? Because of the at-sign and curly brackets in front of the title reference it should be aware that this part is an actual expression/dynamic content field.

     

    CopyPaste_PA.gif

     

     

  • LukeSykes Profile Picture
    LukeSykes on at
    Re: The Expression is Invalid - POST Method for creating a site page

    Hi There

     

    I did exactly that when it didnt work in the expression box, then followed the rest of the tutorial, the error I now get is this

     

    Server relative urls must start with SPWeb.ServerRelativeUrl
    clientRequestId: 78c2cc34-23a6-49a4-8ce8-0df9b4ce4926
    serviceRequestId: 401543a0-f053-4000-46d1-e46df259e539

     

    but I cant see where to input that

     

    LukeSykes_1-1654090210014.png

     

     

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