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'GraphUserDetailByEmailMultipleFound'. Error Message: 'Found multiple matching users for abc

Hi there,


I get this error mentioned in the subject line for the Flow that is used for sending Approval. I have checked the O365 Admin and Azure AD user profile and there is just one primary email ID/ profile for the affected user name. Looking for suggestions, please.

Community Support
Community Support

Hi @  MB3,


Could you please share a screenshot of the configuration of your flow?

Which action would run failed with the error message that you provided?


Please share more details so we could provide a proper workaround for you.



Alice Zhang

Regular Visitor



I got the same error suddenly. 

I'm testing with a very simple, 1-step approval flow on files stored in a SharePoint library.

The name of the approver is taken from a field of the library.



The approval actions fails with the error message:

The request failed. Error code: 'GraphUserDetailByEmailMultipleFound'. Error Message: 'Found multiple matching users for ....


Any suggestions what could be wrong?




I faced the same problem, but modifying the AD accounts to avoid this issue is not a solution for me.

So, what I end up doing was to assign the approval to the "Id" of the user instead of the "email", as follows:

1. Before the approval action, add a new Office365 "Get user profile" action to get the "Id" of the account, then look for the account using your approver email.

2. On the approval action, update the "Assign to" field to the outcome of the "Id" field from the previous action

3. Save and test the flow





Ok, I'm having the same error and I swear I've used your work around in the past but now I'm trying to re-create an old workflow I had and when I use the "ID" attribute I get this.


BadRequest. The request failed. Error code: 'InvalidApprovalRequestor'. Error Message: 'The approval requestor must be a single, valid user account within your organization.'.


I also encounter this issue, any idea of it

I tried this fix as "Get Manager" and "Get User Profile" as a step before the approval and it doesn't work.  I get the error "Assign To" field must be an email.  When I switch the assign to field to Mail from the Get User profile step it creates the exact same error again.

"BadRequest. The request failed. Error code: 'GraphUserDetailByEmailMultipleFound'. Error Message: 'Found multiple matching users"


Capture 3.PNGCapture 2.PNGCapture.PNGAny help is appreciated.



Invalid request error, after using 'ID' in the 'Assigned To' field.

The issue fixed on my side now.  In my scenairo, fo work convincence, tagart user used to add his email address on another domain ID.(we seperate privilaged ID and normal user ID).

To make the email address unique, I use a dummy mail address to override one of ID. the issue fixed when I try it afte 24hrs.

Hope this would help.

Post Partisan
Post Partisan

I'm having the same issue, but when I look in Azure AD, I do not see any duplicates.  It seems to be a sync issue.  The error gave me two GUIDs "Found multiple matching users ('GUID #, GUID#') for".  Are these GUIDs from AD?

I'm still having the exact same issue and splitting off to a separate domain isn't an option.  Does anyone have a working solution?  I've even tried the Get User Profile and use the ID and it still results in the same error.



Flow Failure Multiple Matching Users.PNG


Yes, these are the Object IDs from Azure AD and you can search them from AAD, Users

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