Transaction not yet indexed

ymc4fSfAJcyePbn9HNdD1HoPqfN7ZYVBydPsfHfTfdhMe3Cx5CKDq6Rrtp3NrB6NHeXK5qTMPoPCkf96mYWxYV8

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