Transaction not yet indexed

668MdiwmNdr6byd21anMGVHEoPLmARf9eD4Ak6PNu74tkb2eyTMFxe8m6QtR9LM1SYG6KWf4Ufg1J9Gu3u4s8EhJ

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