ah, I understand. Hum, yes, I didn't think of that. The explanation is the following: the nested parts have some placement property, so when you create a datum on a feature inside the part, the datum has the placement of that feature. If the datum is inside the part, it inherits the part's own plac...

I can use the LCS_in_Model in order to position my subassembly but within the model I don't have a possbility to link the LCS on the Model level to any part of the subassembly. you can attach the LCS_in_Model to an LCS_in_childPart with the Place_Datum command. Better yet, select LCS_in_childPart i...