Issue Context:
* Users encounter a warning when searching Campaign records in the Quote Line Editor.
Root Cause:
* For Lookup fields to work correctly in Salesforce CPQ's Quote Line Editor, a Twin Field must exist on the target object (Campaign) with the same API name as the Quote Line lookup field.
Solution Steps:
* Create a custom field on the Campaign Object with the same API name as the lookup field on the Quote Line Object.
* Ensure the field types match (e.g., both are Lookup fields or Text fields).
Validation:
* Test the functionality by searching for Campaign records in the Quote Line Editor. The warning message should no longer appear.
Salesforce CPQ Documentation Reference:
* This is a common configuration for CPQ Lookup fields in the Quote Line Editor.