Transaction not yet indexed

AMXc3fmTkLSXFSSRcsy4e6SdGj91RhWLkJKvMtc4ztFtG3Zd6VSJGtywNKvv7SfwjX8qZJiEDYtYdaFPgKGKxxM

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