# Update

## Command Description

<figure><img src="/files/ni8MnSyTmaUy7MnWWepY" alt=""><figcaption></figcaption></figure>

The Update command updates all structured item numbers in dependent subassemblies of the current (main) assembly.

{% hint style="danger" %}
For new Inventor versions, this command is obsolete because Inventor updates the items automatically.
{% endhint %}

{% hint style="info" %}
This command acts on the current active assembly only.
{% endhint %}

{% hint style="warning" %}
This command is to be run in the main assembly only.
{% endhint %}

A schematic image of the process is in the image below.

<figure><img src="/files/TLLmnc4sM3r24JU57F4Y" alt=""><figcaption><p>Update command workflow</p></figcaption></figure>

### Summary of changes to the BOM performed by the command (a comparison matrix)

<figure><img src="/files/eRk5t9qgnhnC6mdtZz2S" alt=""><figcaption><p>The comparison matrix of BOM manipulation tools </p></figcaption></figure>

## Command Location

* Assembly environment (`Be.Smart T4I -> BOM panel`, `Assemble -> Manage panel`).

## Command Settings

This command has no settings.

## Workflow Overview

1. Change the structured item number of the subassembly.
2. Run the command.

## Description of changes performed by the command

First, only the subassembly item number was changed. After running the command, all dependant item numbers were updated.

| Structured main assembly BOM after changing the subassembly item number | Subassembly item numbers after applying the command |
| ----------------------------------------------------------------------- | --------------------------------------------------- |
| ![](/files/wqfhq2qEiYU1ngBv8tcZ)                                        | ![](/files/ZOX8zfv9tjj6L5KrmkEI)                    |


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