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 Properties tab to the front.
3. In the property table click [...] in the Data hierarchy level in the value field of the Schematic macro property.
4. In the selection dialog opening select a macro file that contains a schematic macro with an assigned layer which is EPLAN-specific.
   
   Or alternatively to this, delete the entered schematic macro in the value field of the property.
   
   Or create a new schematic macro with an EPLAN-specific layer, store it in the desired macro directory and select it again at the property.
5. Close the parts management, save the modified data, and carry out a parts synchronization.
6. If required, start a new check run.