Documentation update

# <a name="SAEM-PDU-Descriptions"></a>ASN.1 module SAEM-PDU-Descriptions

OID: _{ itu-t (0) identified-organization (4) etsi (0) itsDomain (5) wg1 (1) ts104091 (104091) sam (0) major-version-1 (1) minor-version-1 (1) }_

OID: _{ itu-t (0) identified-organization (4) etsi (0) itsDomain (5) wg1 (1) ts104091 (104091) sam (0) major-version-2 (2) minor-version-1 (1) }_

## Imports:

* **[ITSsa1](ITSsa1.md)** *{ iso (1) standard (0) localized(16460) sa(2) version1 (1)}*<br/>

* **[ETSI-ITS-CDD](ETSI-ITS-CDD.md)** *{itu-t (0) identified-organization (4) etsi (0) itsDomain (5) wg1 (1) 102894 cdd (2) major-version-4 (4) minor-version-1 (1)}*<br/>

* **[ETSI-ITS-CDD](ETSI-ITS-CDD.md)** *{itu-t (0) identified-organization (4) etsi (0) itsDomain (5) wg1 (1) 102894 cdd (2) major-version-4 (4) minor-version-1 (1)} WITH SUCCESSORS*<br/>

## Data Elements:

### <a name="SAEM"></a>SAEM

This type represents the SAEM PDU.

 It shall include the following components:

Fields:

* _header_ of type [**ItsPduHeader**](ETSI-ITS-CDD.md#ItsPduHeader) <br>

* _header_ of type [**ItsPduHeader**](ETSI-ITS-CDD.md#ItsPduHeader)  (WITH COMPONENTS {... , protocolVersion (2), messageId(saem)})<br>

  the header of the SAEM PDU.

* _sam_ of type [**Sam**](ITSsa1.md#Sam)  (WITH COMPONENTS {version, body (WITH COMPONENTS {..., serviceInfos PRESENT})})<br>

  the service announcement data of the SAEM PDU.

```asn1

SAEM ::= SEQUENCE {

    header  ItsPduHeader, 

    header  ItsPduHeader (WITH COMPONENTS {... , protocolVersion (2), messageId(saem)}),

    sam     Sam (WITH COMPONENTS {version, body (WITH COMPONENTS {..., serviceInfos PRESENT})})

}

```