Transaction not yet indexed

Am8JQb8kmdn6KpikV2KwPMPZHzrTCHeAM4ZCv2c9Bv3zHcorWQJA1ZPJLCeMPLjmVGC7MvmEHunu3up8pexdgh8

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