Transaction not yet indexed

mC21k5W13RQ83d4JHKgPjT3GahBTEkSW2v5DEJawfzpprWijVhRXBmV1JfqpwefvA89TDWcS3d1FKaS979ZJ6Ph

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