Transaction not yet indexed

MMkKE7ZXb2fkpLVsjx87PQNtDHXLAs2iFPDLwhJ3Tg6KDFxtsPuc4chdsdQVU6mCwk7NEzPBFpa2qGCQWSYSZBH

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