SUBSCRIBE_ANNOUNCES_ERROR — MoQT draft-09 §7.26.

A publisher sends a SUBSCRIBE_ANNOUNCES_ERROR control message in response to a failed SUBSCRIBE_ANNOUNCES.

SUBSCRIBE_ANNOUNCES_ERROR
{
  Type (i) = 0x13,
  Length (i),
  Track Namespace Prefix (tuple),
  Error Code (i),
  Reason Phrase Length (i),
  Reason Phrase (..),
}

Figure 27: MOQT SUBSCRIBE_ANNOUNCES_ERROR Message

Track Namespace Prefix: As defined in Section 7.13.
Error Code: Identifies an integer error code for the namespace subscription failure.
Reason Phrase: Provides the reason for the namespace subscription error.

The application SHOULD use a relevant error code in SUBSCRIBE_ANNOUNCES_ERROR, as defined below:

Table 7
Code	Reason
0x0	Internal Error
0x1	Unauthorized
0x2	Timeout
0x3	Not Supported
0x4	Namespace Prefix Unknown