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Xtension - Nintex Workflow Integration

  • May 6, 2026
  • 2 replies
  • 25 views

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Hi Team,

Can advise what is the error message means?

We were trying the API integration via Postman testing and is working fine however when apply into Xtension and it prompt the error as below screenshot.

In step1 using Xtension able to get client access token. In step 2 to get Authenticate Enterprise User token and it prompt error.

 

 

2 replies

PeterByun
Nintex Employee
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  • Nintex Employee
  • May 12, 2026

Hi ​@CatherineChee

Thanks for the detailed post. The error is being returned from the downstream service, but given Postman works fine, it's likely something in how the request is being constructed on the Xtension side.

This one is best tracked through a support ticket so a support engineer can investigate further and work with you on a resolution. Could you please submit a support ticket and link this thread for context?

Thank you,
Peter


Simon Muntz
Nintex Partner
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  • Nintex Partner
  • May 12, 2026

Hi ​@CatherineChee,

Unfortunately, you will find that Nintex Support are not able to help you with the Xtension as they do not support custom code. Please see the FAQ section here: https://www.nintex.com/customer-success/support/

Please provide a copy of your Swagger, or at least the part that has the authorisation header, so we can possibly assist.