Transaction not yet indexed

iSgggRq6pBfFxn4u6gghUtWLvRGdT2Z8da4d2qiWfZChSRHpVCcZVXzHWyLFfEGruu4kyToMNPDBboFzMCRJbSB

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