Transaction not yet indexed

pmm4zwAg147ygQGwnDHyYsLCCtYPaw5nmtWm1P2LS9jq18CYs64K68iRMdWmYDe2QpLPTBQZLqKKKWvCKHpLHDp

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