To resolve missing fields in the Salesforce Related Record component, grant Create and Edit permissions on the related object. Users with Read-only access see a compact layout with fewer fields; full permissions show the complete field set.
Grant users Create and Edit permissions on the related object to allow them to see the same set of fields that System Administrators do. The following steps will help do so:
Note: The steps below are applicable to custom profiles only.
Most standard profiles already have Create and Edit permissions on a standard object, but if they do not, you may add a permission set instead. The steps provided above are also applicable in adding a permission set. After a permission set has been created, make sure to assign it to the affected user(s).
See also:
Enable the Enhanced Profile User Interface
Standard Lightning Page Components
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