Transaction not yet indexed

1Mku1SCyAXrLUvrLKutQEHtLdJa98uP92ADYbSjYwqCLqR1HgKMtoBXT9QHetdvQ6FmYRAbKUvSkDTbfPUDF8k6

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