Cause

In the parts database to be checked a part was found where a document was entered which EPLAN cannot find.

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 Documents tab to the front.
3. In the File / Hyperlink column click the entry that contains the path to the document not found and click [...].
4. Select the required document from the selection dialog opened.
   
   Or alternatively the table entry with the path specification of the non-existent document.
   
   Or store a new document in the document directory and select it in the File / hyperlink column.
5. Close the parts management, save the modified data, and carry out a parts synchronization.
6. Then start a new check run.