Transaction not yet indexed

MB1fak6XCk3YcFupS6bJtmTLazm8FfbPq4BUTQc6ffdKrTUe6QKQssJMffoh2kYxB4pPcpquKyVGBTk4XYGPEsZ

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