In the following steps, you create a substitute level of detail representation using a supplied, manually created substitute part. The derived part you created earlier created a significant savings in relative memory consumption. The simplified substitute can consume less memory than the derived part, depending on the number of features of the part.
A message states the part will be designated as a substitute, and that all links to external references for the part will be disabled.
The substitute level of detail representation is created and automatically set as the active level of detail representation.