`truc-mixed`


Category	Mempool policy
Surfaces as	HTTP 409 (`rejected by node policy`) when submitted to a node; not a consensus failure
problem+json `code`	`truc-mixed`

Where it is defined

§13 Mempool policy (not consensus): may not chain with non-TRUC unconfirmed transactions [truc-mixed];

See the error model for the RFC 9457 response shape.