Transaction not yet indexed

7518sM7LXVWNVwJFNmNvUNgukGXQaNF1FAayJrwfbtnJUa8tFpgSY3GdMbsosDA4fUDbQmu7Fy6f7FWXVcD3nN6

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