SmartAVP allows you to customize your individual messages.

3GPP-Charging-ID  AVP ( 2 )

For a GGSN, the Charging ID for this PDP Context together with the GGSN IP Address constitutes a unique identifier for the PDP context. For a PGW, the Charging ID for this IP-CAN bearer together with the PGW IP address constitutes a unique identifier for the IP-CAN bearer.
Reference: 3GPP TS 29.061-f50   View

Type:

  OctetString

Mandatory Bit:

  MUST NOT

Protection Bit:

  MAY

Vendor ID:

  10415

Value Length:

  0 .. *

Containing AVPs
PS-Furnish-Charging-Information
PS-Information
SDP-Media-Component