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Power Platform Community / Forums / Power Automate - Connector Development / Custom connector test ...
Power Automate - Connector Development
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Custom connector test succeeds, but 401 error occurs when running the flow

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Posted on by CU11030755-0 2

I am currently creating a Power Automate flow to register data into the Salesforce Contact object.

■ Flow structure:

  1. Manually trigger the flow

  2. Send an HTTP request to retrieve user information

  3. Parse the JSON responseUse a custom connector to register data in Salesforce (POST)

■ Issue:

  • The custom connector alone works fine and successfully creates records in Salesforce.

  • However, when running the Power Automate flow, the custom connector part fails with a 401 error.

■ Error message:

{
  "message": "Session expired or invalid",
  "errorCode": "INVALID_SESSION_ID"
} 
If anyone knows the cause, please kindly let me know.

Thank you in advance.
Categories:
Authentication
I have the same question (0)
  • stampcoin Profile Picture
    stampcoin 4,082 Super User 2025 Season 2 on at
    Custom connector test succeeds, but 401 error occurs when running the flow
    @CU11030755-0 Hi again,
    Do you use the same account for Send http request  and custom connector ?
    Add another link:
     
     
  • Suggested answer
    stampcoin Profile Picture
    stampcoin 4,082 Super User 2025 Season 2 on at
    Custom connector test succeeds, but 401 error occurs when running the flow
    The token is expired, you have get a new one for the header.
    in the header when you invoke http, provide :
     
    Authorization: Bearer access_token
     
     
    below is just an example.
     
     

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