This error occurs if the SSIS package is run against a Data Quality Server installation, which is different from the one against which the SSIS package was created. The Data Cleansing component in the SSIS package internally stores the "ID" of the knowledge base against which it is mapped instead of storing the "name" of the knowledge base. The Knowledge Base ID for the same knowledge bases is different in diffferent Data Quality Server installations. Hence, the DQS cleansing component is unable to locate the Knowledge Base ID for the same knowledge base on another Data Quality Server installation, and throws this error.

To resolve this issue, before running the SSIS package against the new Data Quality Server installation, edit the package to change the connection string to point to the new Data Quality Server. This changes the Knowledge Base ID in the package accordingly, and you will be able run the package succesfully against the new Data Quality Server installation.

This issue is also documented here: Troubleshooting Operational Issues in DQS.