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  • Named credentials developed for a Customer Portal working fine for Admins,

  • but where as the customer portal users have access issues even after

    • adding the User to the Permission set and
    • adding the External Credential to the Profile under Enable External Credential Principal access.

  • When ran the logic from Execute Anonymous window got the Status as 200

Am I missing any other step to give access?

Here is the error System.CalloutException: The callout couldn't access the endpoint. You might not have the required permissions, or the named credential "customerPortalCreds" might not exist

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  • Does running user have Read access to UserExternalCredentials ? Commented Aug 25, 2023 at 23:10
  • Thank you cropredy that helped. my question is well formed with necessary info not sure why it marked as negative. Commented Aug 26, 2023 at 17:17
  • N.B. I didn't downvote your question. Did adding R or View All to UserExternalCredentials solve your issue? Commented Aug 27, 2023 at 3:35
  • Read permission to the User External Credentials resolved the access issue. Commented Aug 28, 2023 at 4:32

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In addition to the things you did, one easy thing to forget is to grant the running user (via Profile or Permission Set) CRUD access to UserExternalCredentials

The Doc reference for this is User External Credentials

N.B. The doc shows granting full CRUD to UserExternalCredentials but in my experience View All is sufficient when using Basic Authorization if that happens to be your use case.

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