Transaction not yet indexed

556MNtkfppgDCytHfiNfwjp3H91yTQC2PAfLsUM6197RubSKNbYkhTSh2dBqt8DPrAhHJEGx8H7KJVqfjWh3qdK7

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