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Power Automate - Using Flows
Unanswered

The parameter __metadata does not exist in method GetById.

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Posted on by

Hi

please could some assist, 

I am trying to update the "rate column" based on whether a new item is created or modified... 

I am getting this error only when the trigger is modified but works fine when its a new item created. 

 

KeithMontana_0-1665068174483.png

 

This exact same set up is working when updating rate when a new item is created but throws an error when an item is modified

 

KeithMontana_1-1665068428751.png

 

Please if anyone can point out what l am not doing right would be greatly appreciated. 

 

Many Thanks 

 

  • David_MA Profile Picture
    10,699 Super User 2025 Season 1 on at
    Re: The parameter __metadata does not exist in method GetById.

    I am by no means an expert with HTTP requests, but I have done a couple following instructions on the web. I believe you need to remove the %20 in your library name in the Uri string and just use the display name of your document library as it is displayed in the site contents. However, to confirm this, I renamed a list I am currently testing with several http requests and updating the Uri to the new display name of the list worked.

     

    However, you still may need to do what @v-jefferni said. My flow uses Patch to update the list as well.

    Web capture_7-10-2022_13538_make.powerautomate.com.jpeg

  • v-jefferni Profile Picture
    on at
    Re: The parameter __metadata does not exist in method GetById.

    Hi @KeithMontana ,

     

    If you would like to update a specific item in the library, you should use the Patch method than Post method:

    Send An HTTP Request To SharePoint In Power Automate (MS FLOW) (c-sharpcorner.com)

     

    Best regards,

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