> For the complete documentation index, see [llms.txt](https://help.auxalia.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.auxalia.com/plant-tools/plantspecdriven/how-to-use/concepts/assign-catalog-data.md).

# Assign Catalog Data

The term 'Assign Catalog Data' is a bit misleading. It should be 'Assign Pipe Spec Data'. What it does, it maps/assigns values from the Plant 3D Pipe Spec to the P\&ID Symbol's properties.

Details can be found under [Inserting a P\&ID Symbol into a Pipe Line Segment](/plant-tools/plantspecdriven/how-to-use/use-cases/editing-line-segment-properties-pid/inserting-symbols-pid.md) and [Changing Spec or Size of a Pipe Line Segment](/plant-tools/plantspecdriven/how-to-use/use-cases/editing-line-segment-properties-pid.md).

The following images are a typical example often used by customers. If you insert a general valve symbol you see several properties starting with PSD which are read-only and they are all blank.

![](/files/1DnM5WwZl52752UzcjXV)

If you insert this valve you will be shown the 'Part Selection' dialog where are see the suitable valves from the Pipe Spec.

![](/files/qTa0oGq7uRhcLZcn84Tm)

After selecting a part from the list PlantSpecDriven can substitute the P\&ID Symbol (optional). In the Properties Palette you will then see, that the properties are filled with the data from the Pipe Spec.

![](/files/NhfSvFYtes2kJmDJ1rzO)

If AutoPipe is also used, the flange symbols will get data from the Pipe spec as well.

![](/files/iUougbbQ9Np4DFsS4Sgl)

And since AutoPipe can also insert Fasteners like Gaskets, those Gaskets get Pipe Spec data as well.

![](/files/5nTWnKOR80uhAwABmBJx)

If properties which are used for finding the correct Part change, the Assign Catalog Data feature will automatically update the assigned Pipe Spec data.

![](/files/LGRqNH9A9qjPEBETECwH)

Also for the flanges.

![](/files/BcrYCTnTVaOBdwsk4sDj)

And for the Gasket.

![](/files/U4F9vpKxMFPgy8XJCzAE)