Transaction not yet indexed

556JXM2nYLsVe8ptTyy1my7NfQRrdU7GfTeDk3znSh3Ck4YGG7SpCKehE5LFAcxPjCWFjB3MzmvchHvbMu8gv153

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