You can create a file name scheme for families in a category. When you insert a part family member (part) in an assembly, the file name for the created part file corresponds to the file name scheme.
The File Name must be unique for all family members that use the same storage folder (specified by the Family Folder Name). When a file name is not unique, placement of the family member to an assembly can be disabled. This situation occurs if a standard part file with the same name but belonging to another family member exists in the storage folder.
File Names must include family-specific identifiers to be unique in Content Center. The File Name expression for custom families must include all custom columns to define unique file names for all custom family members.
To begin, display the Content Center dialog box. Click Manage tab Content Center panel Editor . Then select a read/write library in the Library View list.