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STATUS_GRAPHICS_SOURCE_NOT_IN_TOPOLOGY
The source exists outside the topology being used
A source can be known to the adapter but still absent from a particular VidPN topology. This status means the operation required a source that participates in that topology, and the specified source is not included in any relevant path there.
The failure is topological membership, not necessarily source identity. It can happen after path pruning, when building a partial topology, when using a source from another VidPN, or when a clone/extend operation removes all paths for a source but later code still tries to pin a mode for it.
What to check
- Compare the source ID against every path in the topology before checking mode-set details.
- Reacquire topology after pruning or augmentation; membership can change even when the adapter source inventory does not.
- Avoid treating absence from one topology as proof that the source ID is invalid globally.
References
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