Transaction not yet indexed

NX15k6sQGptqAS2nwjkzZz4LEeD18wjMM5oRxiyUujvqbVYWkvN4GAvMPAMMms3dkQpTYfGtUENTHCL5r33fLN6

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