Transaction not yet indexed

51aCoLk8P6v6zcQn9vU4iNUMWUCdEZCtRJrSDhMB4zchVt4YcF2jdasJNkFRE3PUz4kFTKzi7FU66Mzz3Y5id51F

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