A manual relationship is defined as using a column that cannot be found.

How to fix

1. Check your options file - locate the manual relationship under manualRelationships
2. Verify column names in both sourceColumns and targetColumns arrays
3. Check spelling and casing - column names are case-sensitive
4. Confirm the columns exist in their respective tables

Common Issues

Wrong column name: "sourceColumns": ["UserId"] when column is actually user_id

Case sensitivity: "targetColumns": ["ID"] when column is actually Id

Typos: "sourceColumns": ["Costumer_Id"] instead of "Customer_Id"

Wrong table reference: Column exists but in a different table than specified