Unsupported OAuth grant type 'Client Credentials'.

Abhishek SNOW
Kilo Contributor

‎09-19-2017 04:15 AM

HI Techies,

can any one help regarding this "   Unsupported OAuth grant type 'Client Credentials'. " or 'Resource Owner Cred"

this one i am geeting while trying to get auth token

Related Links
Get OAuth Token

I am not able to get auth toke.. what should be the exact problem ...

Regards,

Abhishek

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4 REPLIES 4

sergiu_panaite
ServiceNow Employee
ServiceNow Employee

‎09-19-2017 05:16 AM

Take a look in the UI Action called "Get OAuth Token" as that link is just a UI action.



According to UI action code, it looks to me that 'grant_type' is not set to either 'password' or 'client_credentials' or 'authorization_code'. If it's not one of these then you get that error message.


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Heather White
Mega Guru

‎08-09-2018 02:14 PM

I am having a similar issue-but when I changed the code, the UI action isn't working.  Any thoughts?

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adriantan08
Giga Expert

‎04-19-2021 11:38 PM

It seems like there's a bug in the UI Action itself.

To get this fixed, I had to edit the UI action "Get OAuth Token".

When you log g_scratchpad.grant_type, its value is actually the Grant Type Label and not the value.

 

Before:

} else if (grantType === 'authorization_code') {

 

After:

} else if (grantType === 'authorization_code' || grantType === 'Authorization Code') {

 

I have yet to reach out to ServiceNow to see what they think about this. 

 

Hope this helps

naren19
Giga Guru

‎03-26-2025 06:49 AM

Yes, i also ran into same issue, but the g_scratchpad.grant_type for older REST Message seems to be Display Value of Grant Type like Client Credentials/Authorization Code whereas the newer REST Message has the actual value like client_credentials / authorization_code so that's why in UI Action when the condition is checked it got error.
Solution would be creating a new REST Message and then link the OAuth Profile

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