Callout failed for invocable action JSONPlaceholderES.getPostById. We couldn't access the credential(s). You might not have the required permissions, or the external credential "JSONPlaceholderCred" might not exist.

Question

I am getting this in my agentforce employee agent. I tried to give access to Named credential for the agent, but I couldn't see the named credential that I had created, in the permission set. What could've been wrong?

Callout failed for invocable action JSONPlaceholderES.getPostById. We couldn't access the credential(s). You might not have the required permissions, or the external credential

#Agentforce

Keiji Otsubo · Accepted Answer

Hi ,

Please look for "Principals" in External credential, create a new one if there is not any.
Then either add this Principal to your profile in "Enabled External Credential Principal Access" or add it to "External Credential Principal Access" in a permission set and assign that permission set to your user.

https://trailhead.salesforce.com/trailblazer-community/feed/0D54V00007T4UQgSAN

Callout failed for invocable action JSONPlaceholderES.getPostById. We couldn't access the credential(s). You might not have the required permissions, or the external credential "JSONPlaceholderCred" might not exist.

Agentforce

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