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2 answers
130 views

How to catch "System.UnexpectedException: Unable to fetch the OAuth token."

I have a Queueable class that makes a callout using Named Credentials. Sometimes I get System.UnexpectedException: Unable to fetch the OAuth token. I surrounded the send method with try/catch block ...
Andrii Muzychuk's user avatar
0 votes
0 answers
205 views

Get Presigned URL using named credentials

I successfully obtained the pre-signed URL to upload large file to aws s3 bucket using the method described in the article https://mtr-design.com/news/how-to-create-a-presigned-url-for-aws-s3-using-...
Mohamed Ashfak's user avatar
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0 answers
1k views

Named callout Null in http request with named credential - What would cause it?

I am making a callout and getting the error "System.CalloutException: The callout couldn't access the endpoint. You might not have the required permissions, or the named credential "XXX"...
Pauline's user avatar
  • 395
1 vote
1 answer
6k views

Named Credential Permission Error - How to enable named credentials with "Named Principal"

I've got a new named credential setup using an OIDC auth provider and the named principal type. It's authenticated successfully but when I try to call it I get String namedCredential = 'callout:asdf'; ...
Ralph Callaway's user avatar
1 vote
1 answer
4k views

Apex callout Unable to tunnel through proxy. 403 forbidden. Using Named Credentials; works fine in curl

Given: Apex Callout (POST) to an in-house REST service Named credentials Authorization headers are correct URL is correct Verified working using curl When: Invoked using execute anonymous or ...
cropredy's user avatar
  • 73.3k