The error you're experiencing with Ocean.io Find Company Lookalike could be due to several factors. Based on how the integration works, you should check:
1. Company domain input - ensure you've entered valid domains (maximum 10)
2. Required fields - verify all mandatory fields are completed
3. Filter settings - check if any filters are conflicting
Try running the action on a small sample first (about 10 rows) to verify results before scaling up. If the error persists, please share the exact error message so we can troubleshoot further.