| EntityId | FB1EntityId | Runtime entity ID of this placed game object instance. | |
| ParentEntityId | FB1EntityId | Runtime entity ID of the parent object this object is attached to. | |
| RelatedProps | TMap | Map of related property hashes to their associated values for this object instance. | |
| ObjectDataTableId | FName | Data table row ID referencing this object's definition in the object data table. | |
| ParentSlotName | FName | Name of the parent slot this object is attached to. | |
| Transform | FTransform | World transform of this placed object. | |
| FloorLevel | int32 | Floor level index on which this object is placed. | |
| IsDevLocked | bool | Whether this object is locked by a developer and cannot be moved by players. | |
| CustomizeData | TArray | Array of customization save data entries for each customizable slot on this object. | |
| Appendix | FB1VariantDataMap | Appendix variant data storing additional per-instance extended properties. | |
| PrintedMeshId | FString | ID of the printed mesh overlay applied to this object, if any. | |
| PrintedMeshOffset | FVector | World offset applied to the printed mesh overlay on this object. | |
| ObjectMetaSaveData | FB1GameObjectMetaSaveData | Metadata save data for game object-specific meta properties. | |
| AuthorName | FString | Author name string identifying who placed or last modified this object. | |
| GalleryPathKey | FString | Gallery path key for associating this object with a saved gallery design. | |
| AssembledAssetHash | int64 | Hash of the assembled asset used for integrity and version checking. | |