Transaction not yet indexed

ACmpSVvnQeMyEtEe2L9P6uXnERWmiFxWB4zoXeBkiqyu6dYV3DR6fNSWrdr1CKaTJwW9D5vxeLAHz3ALc8iSws4

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