Message type: E = Error
Message class:  KU - Costing: Rollup 
Message number: 394
Message text: Characteristics for product drill-down not yet generated
For the product drill-down, a structure definition must be made
that specifies the characteristics from the classification system.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Go into Customizing for Product Cost Controlling and carry out the step
"Generate characteristics for product drill-down".
Error message extract from SAP system. Copyright SAP SE.
The SAP error message KU394, which states "Characteristics for product drill-down not yet generated," typically occurs in the context of SAP's Product Lifecycle Management (PLM) or when working with characteristics in the context of variant configuration. This error indicates that the system is unable to retrieve the necessary characteristics for a product because they have not been generated or are not available in the system.
Cause: Missing Characteristics Generation: The characteristics for the product have not been generated yet. This can happen if the product is newly created or if the characteristics have not been properly defined in the system.
Configuration Issues: There may be issues with the configuration of the product or the variant configuration settings. Data Inconsistencies: There could be inconsistencies in the master data or the configuration data that prevent the characteristics from being generated. Authorization Issues: Sometimes, the user may not have the necessary authorizations to view or generate the characteristics.
Solution: Generate
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
KU393 Characteristic &1 not used for the product drill-down structure
What causes this issue?  An internal error occurred.System Response  The system issues an error message and will not allow you to continue with this t...
KU392 Field &1 not used for the product drill-down structure
What causes this issue?  An internal error occurred.System Response  The system issues an error message and will not allow you to continue with this t...
KU395 Select a valid entry
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
KU396 Texts were updated for characteristics already generated (from DDIC)
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
Click on this link to search all SAP messages.