Transaction not yet indexed

AB8fkh8Cm3ECtXNVxTecNPFfeYeYsixfyfoFsVDC2C7Lw5bEwrcJ8M2uCW9Y6iKKoYjBtHi119ucGQek4r9Mka8

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