Section: 17.7.6 MBMS-Service-Area AVP
Content: The MBMS-Service-Area AVP (AVP code 903) is of type OctetString, and indicates the area over which the MBMS bearer service has to be distributed. The AVP consists of the following parts: The MBMS service area code represents the coding for the MBMS Service Area Identity. The MBMS Service Area Identity and its semantics are defined in subclause 15.3 of 3GPP TS 23.003[ Numbering, addressing and identification ]  [40]. The length of an MBMS service area code is 2 octets. Each MBMS service area code shall only be present once in the list.