Transaction not yet indexed

2521HE5NGJTjNX6awbkkS3TMn3rBaEv3QyLdZGFrStHhpekcPyPk6RWgB2HCyVMuz1dX3GDCe1zbnZHAjNJeJ2vJ

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