Transaction not yet indexed

ykmcwHHKzoaejbejHAX6XHUnjdrsmc6wBmAdetqoeTNPcsjsPfxzh6A7P9zSCXNM6h9prWUYfqcxqSRa4imuSSU

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