Transaction not yet indexed

mPPfkw7hPWqmKhSSWChFnjZrwRRaQEMYWhvEaB3VVLNNWE9v4qsNAkkQBgcPkGbVDRvHPYKASnU5uA1k8N3JbKC

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