Transaction not yet indexed

1mkSAb8NjcCDCR7P5teBTaQL4N6VXCyC4bAE1hqiWkKUzZqdYh7T2v58XeDyfH4MSDmgmKCJZAksHxMh4GGuaQ1

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