'Authorization' header is not allowed. Use 'API Key' authentication type in the Security tab to set this header.

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Posted on by ErickDiaz

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Hi,

I'm currently creating a custom connector and after getting the access token, I need to be able to make a request passing this token in the header as an authentication bearer token, i.e. Authorization: Bearer abcdefghigklmnopqrstuvwxyz0123456789

I specified the two required headers on my request, Content-Type and Authorization, but got the following error:

'Authorization' header is not allowed. Use 'API Key' authentication type in the Security tab to set this header.

The problem is that this API is located on an on-prem server and "API Key Authentication" is not available when connecting via data gateway.

Is there any workaround to this problem?

Thank you,

Erick

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Microsoft Dataverse with Power Apps

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ErickDiaz 156 on at

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I was able to do figure out a workaround for this problem and it’s now working correctly.

In case someone has the same problem in the future:

1. I created a custom header called "Access-Token" where I pass the value from my Flow as "Bearer abcdefghigklmnopqrstuvwxyz0123456789".

2. Then, I created a Policy to "Set HTTP header", where the Header Name = Authorization and Header Value = @headers('Access-Token'). The action is set to override and the policy runs on the request.

This will add the header Authorization: Bearer abcdefghigklmnopqrstuvwxyz0123456789 to my request as expected by the API.

1 people found this reply helpful.

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JacksonOng 51 on at

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@ErickDiaz ,

You save my day. Thank you for the fantastic solution.

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brianpmcculloug 2 on at

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When I try to implement this, I then "Update connector" to save the changes, it doesn't persist and I loose the policy. Did MS catch on and prevent this from being a workaround?

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DedalKvint 9 on at

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Can you please share an example how to create this policy for setting HTTP header?

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zmansuri 6,048 Super User 2024 Season 1 on at

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Hi, I tried your solution. It's not overriding. Can you help?

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VictorTek 127 on at

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try changing your Authentication Type to No Authentication under '2. Security' and then try again.

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Community Power Pla... on at

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You're a real life saver. After hours of work you provided me with the solution I needed. Thank you!

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croverpfi 3 on at

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an absolute legend. Thanks very much for this. Saved me a lot of pain

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jiler 2 on at

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Running into the same issue, did you end up finding a solution to this?

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tzalar 3 on at

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Thank you for this amazing solution! 😄

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