CSV and Excel Format

CSV and Excel (.xlsx) share one header-row parser. The first row is headers (case-insensitive). Blank rows and rows with an empty model name are skipped.

The file dialog groups these as Auto Assemble File. Run the command with Assemble from a File. Sibling formats: JSON Format, XML and NWF Format. Worked jobs: AutoAssemble Examples.

Two header modes

Tree builder — requires MODEL_NAME, LEVEL, and TYPE (or MODEL_TYPE). Builds nested assemblies. First data row must be LEVEL 0 (the top assembly). LEVEL may increase by at most 1 per row. Walkthrough: File-Driven Model Tree.
Mate into the current assembly — requires MODEL_NAME (alias MODEL_ID). Optional CSYS, interface, designation, and mate-to columns. Every row is assembled into the selected assembly. No LEVEL 0 row. Walkthroughs: Schematic Assembly, Assembling Backshells to Connectors.

Tree builder

csv

LEVEL 0 defines the top assembly (not assembled as a child). If Creo already has a current assembly, AutoAssemble still reads that row as the file’s top model name, then uses the selected assembly as the output.
If a named model does not exist and Create Models if Not Found is on, AutoAssemble creates it from the default start part (or empty if that start part cannot be copied).

Mate into the current assembly

csv

Default CSYS names: part PRT_CSYS_DEF; assembly ASM_DEF_CSYS (fallback ASM_CSYS_DEF). MATING_CSYS of <DEFAULT> uses default placement. Empty MODEL_CSYS uses the placing model’s default CSYS.

Identity columns

Header	Aliases	What it does
`MODEL_NAME`	`MODEL_ID`	Creo model name. Required in both modes. Family-table instances need the full name, for example `INSTANCE001<FAMILY_NAME>.PRT`.
`TYPE`	`MODEL_TYPE`	`ASM`, `PRT`, `SKEL`, and similar. Required for the tree builder.
`LEVEL`		BOM indent. 0 is the top assembly. Required for the tree builder.
`SUB_TYPE`		Refines type — for example PRT + SKEL is a skeleton part. Skeletons are added as skeletons, not packaged parts. Bulk, skeleton, and harness creation uses `TYPE` / `SUB_TYPE`, not `COMPONENT_TYPE`.
`MODEL_TEMPLATE`		Start-part / template model name when creating a new model.
`DESCRIPTION`	`DESIRED_DESCRIPTION`	Model common name.

Designation and grouping

Header	Aliases	What it does
`DESIGNATION`	`REF_DES`, `REFDES`, `DESIRED_DESIGNATION`, `MTAGNAME`, or the organization setting for the ref-des component parameter	Designation applied to the assembled component. How it is stored is the Designator method — see Designator.
`COMPONENT_TYPE`		Stored label only. Common values: `CONNECTOR`, `BACKSHELL`, `BULK`, `SKELETON`, `HARNESS`. Does not change placement.
`GROUP`	`COMPONENT_GROUP`	Model-tree group. Nested groups use `/`.
`COLOR`		Named color or RGB string.

Mating columns

Three roles: CSYS or interface on the component being placed, which existing component receives it, and CSYS or interface on the receiving side.

Role	Preferred header	Aliases
CSYS on placing model	`MODEL_CSYS`	`MODEL_PLACEMENT_CSYS`, `CSYS_FROM`
CSYS on receiving model	`MATING_CSYS`	`MATING_PLACEMENT_CSYS`, `CSYS_TO`
Interface on placing model	`MODEL_PLACEMENT_INTERFACE`	`MODEL_INTERFACE_NAME`
Interface on receiving model	`MATED_RECEIVING_INTERFACE`	`MATING_RECEIVING_INTERFACE`, `MATED_INTERFACE_NAME`
Mate-to component (designation)	`MATE_TO`	`CONNECTED_TO_COMPONENT`, `MATING_BLOCK_NAME`, `PARENT_MTAGNAME`
Mate-to port / CSYS on that component	`CONNECTED_TO_PORT`	`MATING_BLOCK_CONNECTORNAME`

CSYS-to-CSYS does not need mate-to component columns. Mating onto a designated component needs MATE_TO + CONNECTED_TO_PORT and either both interface columns or both CSYS columns. Organization default interface names are not applied if those columns are blank.

Anything listed as MATE_TO is assembled before the rows that point at it, so connectors do not have to appear first in the file.

Offsets, drawings, and parameters

Header	What it does
`XOFFSET`, `YOFFSET`, `ZOFFSET`	Translation applied to the placement. Headers such as `XOFFSET(MM)` are also accepted.
`XTHETA`, `YTHETA`, `ZTHETA`	Recognized but rotation is not applied. Translation only.
`CREATE_DRAWING`	`Y`, `YES`, `X`, or `TRUE` (any case) creates a drawing.
`DRAWING_NAME`	Drawing name. Skip if blank.
`DRAWING_TEMPLATE`	Optional start drawing.
`MODEL_PARAM_FOO` or `<MODEL>FOO`	Model parameter `FOO`.
`COMP_PARAM_FOO` or `<COMP>FOO`	Component (feature) parameter `FOO`.
`CONN_PARAM_FOO` or `<CONN>FOO`	Cabling connector parameter `FOO`.
Any other header	Carried as an extra value (typically a component parameter). Names cannot contain spaces.
`<INDEX>`, `<IGNORE>`, `<SORT>`	Ignored.