Consuming Dynamics 365 FO Custom Service throwing 403 forbidden error

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Posted on by Pooja Karki

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Hi all,

I have developed one custom SOAP service in FO VM and now trying to consume that in .Net Console Application.

I have already done everything: Azure app registration, FO System Admin- Setup. I am also referring to the Git hub repository of the D365 FO web service.

Now I am facing a forbidden error when I am running my console application code.

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Sergei Minozhenko 23,093 on at

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Hi Pooja,

In another thread, you mentioned that you are using VHD? Is that correct? Have you checked that all parameters needed for authorization is correct especially AD resource (without trailing slash)

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Sukrut Parab 71,710 Moderator on at

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Are you able to test this service using any other tool like SOAPUI ? If not try to test and see if you are able to successfully test it. As mentioned by Sergei trailing slash in a resource while acquiring token could cause issues , so check that as well.

docs.microsoft.com/.../third-party-service-test

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Pooja Karki 3,045 on at

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Testing in SOAPURI I will do and update you? where I have to check AD resource for trailing resources?

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zhifeng on at

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Can you check AuthenticationUtility class and make sure all parameter has been set?

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Pooja Karki 3,045 on at

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Yes, I have cross-checked that also.

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Gunjan Bhattachayya 35,423 on at

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Hi Pooja,

We have faced this error earlier for two reasons -

1. App registration API permissions. Please ensure the following permissions are enabled.

2. Are you authenticating with app secret or user Id & password? In case it's the latter, Does the user Id have appropriate access for Azure app registration and for F&O?

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Pooja Karki 3,045 on at

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Hi All,

I have checked the azure app registration and already assigned permission to D365 ERP. I have checked SOAPURI and got a message: There is insufficient account information to log you on.

In azure I have register URL is: Https://<base URL>/soap/services

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Gunjan Bhattachayya 35,423 on at

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Hi Pooja,

Will it be possible for you to share a screenshot of the API permissions under "Azure Active Directory Graph"?

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Pooja Karki 3,045 on at

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Gunjan Bhattachayya 35,423 on at

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Hi Pooja,

Are you authenticating as a user or using client app secret?

Also, which user is configured for this App Id in F&O

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