Transaction not yet indexed

1p51RPLoEp8yWwqT8WLDfPCbqZGb8ESRWeWoMBCT4nwhS8d2C2fmMuAaQ4VpzymMgtXNkLQdMasS5Cp9jJ7NQm8

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