Hi @pawankumar1 

Since User B receives the approval notification and can access the approval record, I'd verify whether they have read access to the underlying task (Incident, Case, RITM, etc.).

A quick way to troubleshoot is to run Access Analyzer as User B against the target record. If User B can't read the task, the Service Portal won't be able to resolve values like {{task.number.display_value}}, which could explain why the details aren't displayed.

Hope it helps,

Hi @pawankumar1 

Delegated users are often blocked from viewing the underlying record in the table ( sn_customerservice_case) by ACLs. 

• So Navigate to ACL
• Search for the read ACLs on your table (like sn_customerservice_case)
• Check whether ACL role is assigned to delegated user or not.