Cause
During the PLC data import an individual connection from '<x>' to '<y>' was determined that was currently not found in the project. In the placeholders '<x>' and '<y>' the respective bus port is output with its identifying DT.
Solution
- Create the connection between the devices by means of bus ports.
- Import the PLC data again.
Note:
Using a new check run (any desired scheme) this module-specific message can be deleted from the message management dialog.