Transaction not yet indexed

AMPN1QgFDQisTMdUb41HfX9347mou5wYhuiQu7kSZE5WejnwKVtzmQUBHLGLjxufWphzWzZFkAPbpYRRNeaYLcY

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