In the docking window Configurator, in the part "din_1025_s (TB)", in the context menu of the connection point "Rohrschelle", click on the command New rule.

Enter a name (here "t_beam_pipe_clip") and define connection part (here "din_3015_cfg") and connection point (here "Zentrum Rohr_KP1")

Rule for connection point "t_beam_pipe_clip" on part "din_1025_s (TB)"

In the docking window Assembly, click on the assembly root element, then on the dummy starter part and then select a table row.

Since in the dialog Assembly properties the option Append free connection points automatically had been activated, now the build should be processed automatically.

No valid table line selected

-> In fact, the build happens automatically, however stops at the pipe clip. The reason is that no table row can be detected automatically.

-> That's why a respective error message is shown: "No valid table line selected"

In the assembly, click on the red pipe clip element and then on a table row.

-> Now the build process will be completed; however, some further adjustments have still to be done.