# Autonumber Field API

| **Autonumber field**                                                                     |
| ---------------------------------------------------------------------------------------- |
| *\<field type=”autonumber” name=”String” roleId=”id” prefix=”string” search=”boolean”/>* |

Autonumber is read-only field with the value incrementally generated on each new envelope draft with current template version UUID.

#### Autonumber Field attributes

* **type** — define if this field is autonumber type, mandatory attribute.
* **name** — string, length from 1 up to 128 symbols, restricted symbols &, “, <, >, field name used to fill in on envelope, unique for document, mandatory attribute.
* **roleId** — id of the role who should fill field on envelope, mandatory attribute.
* **prefix** — string, length from 0 up to 15 symbols, static data which will be used before incremental variable of auto numbering, option attribute.
* **search** — boolean, defines if field is searchable on envelope search or not, if not set default value false, optional attribute.


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