Transaction not yet indexed

Mm6VCau9ZNY3NmnKaicK8GwY2prdqz3cSSQ3qPqZLberEtrUGszAVkb3cXAL9n1jbVXe5L5rbHpP3BRmbmLx1Kh

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