Transaction not yet indexed

5C66RE6fvV2gBVpDnpdmnAosAjAWPAcFdAnntuUfqjZ4qPDnuSPpX6pAHfVFW3JCQY1Tov5P96G7CUDtusNEUGro

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