To Regenerate a Part Catalog

You should regenerate a part catalog that you have modified. Regenerating a part catalog updates the Autodesk part catalog (APC) file. A part catalog can be used in AutoCAD MEP 2025 toolset only if it is updated (regenerated).

To regenerate a part catalog

1. Verify that the catalog you modified is one of the part catalogs specified on the MEP Catalogs tab of the Options dialog box.

   Only the catalogs specified on this tab are loaded into the drawing and, therefore, can be regenerated.

2. In AutoCAD MEP 2025 toolset, click Manage tabMEP Content panelRegenerate Catalog.
3. Note the prompt on the AutoCAD MEP 2025 toolset command line: Catalog Regen [Cabletray/cOnduit/Duct/Mvpart/Pipe/All]
4. Specify the catalogs to regenerate:

   If you want to regenerate ...	then ...
   all of the catalogs	enter a (All), and press Enter.
   the catalogs specified for a single domain, such as Duct or MvPart	enter the appropriate letter, and press Enter. (For example, to regenerate the catalogs specified for Duct, enter d.)

   During the regeneration process, the software updates the catalogs to reflect new or deleted part sizes.

   Note: If multiple catalogs are specified for a domain in the Options dialog box, the software regenerates all of them in the order listed in the dialog box.

   When the catalog regeneration is complete, a dialog box containing the results is displayed. As noted in the dialog box, you can view the full regeneration results in Validate\Catalog_Regen_Summary.txt; the Validate directory is located in the same directory as the Autodesk part catalog (APC file). Examining the text file is helpful when you need to verify that a specific part has been added to or removed from the catalog.

5. Click OK, and press Enter to end the command.

If part sizes are missing or have not been removed, you can make the necessary modifications in the Catalog Editor.