The "Vendor-Id" AVP

The "Vendor-Id" Diameter AVP, which is of type VendorId, uses the AVP code "266".

It has the MANDATORY flag.

It is part of the Capabilities-Exchange-Request, Capabilities-Exchange-Answer, Capabilities-Update-Request commands.

It is part of the Vendor-Specific-Application-Id, Experimental-Result, QoS-Profile-Template, Service-Result, Supported-Features grouped AVPs.