Transaction not yet indexed

MDKvTfYdAmyKhvmugnDw4u2z9q4sp9JRJ2wwjmj2usepChhXzGD8UCj8R9Eu3sLor5LL3GHFHZJ5jGAE4eGwoX4

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