Transaction not yet indexed

AMbbKLmdhbkXzdfKB6xnYWYxMS8sJDJty62DCMD9pKmNUdo9SBBKDc4AMPdQi4uM8ubs4B233J4VRoocFoNP8M4

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