How to get customer data via API

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Posted on by J_Lee

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I have tried to use API to retrieve customer data with POSTMAN.

1) to get token

POST https://login.microsoftonline.com/{tentant- id}/ouath2/v2.0/token

2) to get customer data

GET https://{D365 path}/data/CustomersV2 with bearer in the headers

Unfortunately, the result is failed with error 401. Please advise what wrong it is

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Dynamics 365 Finance

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Mohamed Amine Mahmoudi 26,801 Super User 2026 Season 1 on at

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Hi @J_Lee,

Here some information of ODATA configuration, i hope this can help you.

https://www.ljdynamicswritings.com/2024/03/how-to-authenticate-with-d365fo.html

https://www.postman.com/gtherriault/zippo-d365/collection/7akwe8w/dynamics-365-odata-collection

https://anithasantosh.wordpress.com/2021/04/01/configure-postman-for-d365-fotesting/

Best regards,

Mohamed Amine MAHMOUDI

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J_Lee 1,266 on at

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Thank all.

I have solved the Postman issue.

The token should place in the 'Authorization' tab and select type = Bearer Token

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Ramesh Kumar 7,547 Super User 2026 Season 1 on at

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I hope below can help you

https://shootax.blogspot.com/2021/02/odata-401-unauthorized-issue.html?utm

Thanks

Ramesh

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Anthony Blake 3,092 Super User 2026 Season 1 on at

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Hi @J_Lee,

For future use, this postman workspace has fully working authentication already configured for you:

https://www.postman.com/anthonyblakedev/workspace/dynamics-365-finance-apis

Just complete the environment variables.

Anthony

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