Transaction not yet indexed

AmMhSqfWGZf6MNWc1Uj4SokB2k8CUYuYANsA6Rjh6SSpYmcPXUXDqnm1L4C6oNtq2PRA1ahqQD1RJcCgiAdVLs4

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