When an HTTP is received flows

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Posted on by KM-17111306-0

Hello,

I have a few flows that are using "When an http is received" trigger. Until now I was using Anyone in who can trigger the flow but since last week this option was giving me the below error:

{"error":{"code":"AuthorizationFailed","message":"The authentication credentials are not valid."}}

After some research I changed the who can trigger the flow to any user in my tenant. I have also registered an app in order to be able to use that option.

My issue is that the flow is triggered from SharePoint subsites that are created dynamically when a new project is created which means that I don't have any information available to preset in my flow. To be able to get information that are stored as metadata in my library I am using a button to trigger the flow that uses when an http request is received and get the information in the URL.

Now in order to trigger the flow I need to have another flow that has the HTTP action that calls the flow with the When an http request is received. However my problem is that I can't get the parameters I need for the flow dynamically. I can trigger a flow with manual trigger from the button in SharePoint library but if I specify parameters on the manual trigger I can't pass them dynamically from the button.

Is there a way to achieve this? I need the flow to start from SharePoint library using a button because I use it as a submit action.

Thank you in advance for your help!

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Michael E. Gernaey 53,978 Moderator on at

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Hi @KM-17111306-0

Yeah this will not work anymore since it requires auth now.

So you essentially have to do a double hop authentication to make it work with a Webhook or a power automate trigger (I do not know exactly what you are doing) but can you trigger in SharePoint to save data to a list so it can trigger the flow (but without the HTTP call?) or at least if you were in the triggered flow you COULD authenticate to your primary flow with the HTTP Trigger.

There are other ways as well but validating if you can even do these would help as you are limited no matter what as that Trigger requires auth, so if you can use another trigger by saving data in SharePoint first it would help.

If these suggestions help resolve your issue, Please consider Marking the answer as such and also maybe a like.

Thank you!
Sincerely, Michael Gernaey

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KM-17111306-0 2 on at

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Hello Michael,

Thank you very much for your reply!

I am not sure if I understood what you are suggesting. Let me explain what I am trying to achieve because I don't think I explained it properly.

For every project that is created in SharePoint I automatically create a subsite using a template. This subsite is to be used to store all the information and documents during the lifecycle of the project. In this subsite I also give access to the client and to the vendors that will work on the project. Both the vendors and the client can upload documents related to the project and then submit them for approval. The way I do the submission is from a button that triggers a flow. Until now my flow was using the "When an http requests is received" trigger and was getting parameters from my library as shown below:

{
"$schema": "https://developer.microsoft.com/json-schemas/sp/v2/column-formatting.schema.json",
"elmType": "a",
"txtContent": "Υποβολή Παραδοτέου",
"attributes": {
"target": "_blank",
"href": "='https://default......../triggers/manual/paths/invoke?api-version=1' + [$ProjectSpaceUrl] + '&LibraryName=' + [$LibraryName] + '&FolderName=' + [$FileLeafRef] + '&ClientCompanyEmail=' + [$ClientCompanyEmail] + '&Finaldeliverable=' + [$Finaldeliverable]"
},
"style": {
"font-size": "14px",
"padding-top": "14px",
"padding-bottom": "0px",
"text-align": "center",
"background-color": "#C68B66",
"color": "white",
"display": "=if([$ContentType] == 'Folder' && [$Deliverablefolder] == 'Yes', 'block', 'none')"
}
}

Now that Microsoft changed the action and I can't use Anyone as an option to who can trigger my flow, I need to find another way to get those parameters. The issue is that I can't use For a selected file because I don't know the URL of my subsite beforehand. I am trying to see if there is any other way to get those parameters dynamically as I already have them stored as metadata in the library from where I trigger the flow. I tried using the HTTP action in another flow but I still can't get the parameters.

I hope this give you a better understanding of the situation.

Thank you!

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