Transaction not yet indexed

PmmSDZkt8wgid2PV8pNEcVfLss8nAVLXyq5krtixc1bugo3A5AdDAE2AzsPbvTm4R9SHp8qpNqZuq9ptzmUzrrq

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