For Salesforce lookups, ensure you're using the correct Object field and Search Operator (AND/OR) settings. The Lookup Record action searches within specified object fields using either exact match or "contains" search.
For Outreach lookups, the Lookup Prospect action searches based on email or prospect ID.
If your ID fields are correct but lookups still fail, try toggling the Exact Match setting in Salesforce or verify the object type selection matches your data structure.
If the issue persists after checking these settings, request human assistance by clicking "Talk to a person" for further troubleshooting.