Cause
When importing the bill of materials, an attempt was made to assign more than 50 parts to a device tag.
Note:
In EPLAN a maximum of 50 parts can be assigned to a device. The part index defines the order in which the parts are entered in the Property <...> dialog on the Parts tab.
Solution
Open the import file with a text or XML editor and delete the surplus parts. Save the file, then import the bill of materials again.
Note:
Using a new check run (any desired scheme) this module-specific message can be deleted from the message management dialog.