A baal tefillah who forgets Yaaleh Viyavoh in his silent Shmoneh Esrei doesn't need to repeat Shmoneh Esrei, because he'll be yotzei with Chazaras HaShatz.
If an individual forgets Yaaleh ViYavoh in Shmoneh Esrei at Shacharis and remembers in the middle of Sim Shalom, he has to go back to Retzei and continue from there.
What if a Baal Tefillah forgets Yaaleh ViYavoh in Shmoneh Esrei on Rosh Chodesh and remembers in the middle of Sim Shalom? His options are:
- Finish Shmoneh Esrei as is, but that might be improper because the silent Shmoneh Esrei he's in the middle of is invalid due to the omitted Yaaleh ViYavoh, and finishing might be a bracha livatala.
- Go back to Retzei, but that might be a Bracha Livatala because really he doesn't need to fix this Shmoneh Esrei, being that he has Chazaras HaShatz to rely on.
What should a Baal Tefillah do in this instance?