Transaction not yet indexed

ymu4RwfMQVsp3WHBhSbTsN6TSi9bvC59btDgXevPmQQDGxqYbVSApUrpsJ4gorZUEAiC3pJaaLPzNF9HhAuumyp

The transaction signature is valid but not yet indexed by this RPC node, or the transaction failed before inclusion.