# Create object step

![](/files/-MVtxgxamygkLFWsiTAu)

**Create object** step allows you to create object or to make a link to existing object.

### General parameters

![](/files/-MVty3cWrRh8T1w5_ufk)

* Choose the data structure, whose object we are going to create.
* ID of new object
  * Automatic. The unique ID will be created automatically;
  * Manual. You can compose the expression for the ID> For example, it could be todays date, or a combination of other fields (e.g. `$D.md5('{{field1}}' + '{{field2}}')`)  Remember, that length of ID cannot exceed 32 characters. 
* Save ID to the field. Often necessary in case of automatic ID generation.
* Generating an event (see [event model](/scenarios/principles-of-scenarios/directual-event-model.md)) 

{% hint style="info" %}
If there is an *existing object* with such an ID, no new object will be created. The link to the existing object will be saved to the field.
{% endhint %}

### Fields mapping

![](/files/-MVtzGDaCP1bnuysJDbV)

Fill the fields of new object. Similar to [edit object step](/scenarios/editing-scenarios/action-steps/edit-object-step.md).


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