Cause

In the parts database to be checked a part was found where a macro with a user-defined layer is entered.

Solution

1. In the message management dialog mark the line with the message and select the Properties popup menu item.
   
   The Parts management dialog is opened, the respective part is already marked in it.
2. Bring the Technical data tab to the front.
3. Click [...] next to the Macro field and in the dialog then opened select a macro file with an assigned layer that is EPLAN-specific.
   
   Or alternatively delete the entry in the Macro field.
   
   Or create a new macro with an EPLAN-specific layer, store it in the desired macro directory and select it in the Macro field.
4. Close the parts management, save the modified data, and carry out a parts synchronization.
5. Then start a new check run.