Transaction not yet indexed

Aa91a2TWLbTpiXUYVUEVqta3suvGu55sNY2pGqFVQa1T2HNArY1AC8Nu4GbE8tsy2mgYohXHQc93TYVhdf6igTh

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