If one completed a blessing in Shemoneh Esreh without the required insertion (Havdalah or similar), can one still go back to add it, or is one too late?

ShabbatPrayerShemoneh Esreh

Synopsis

Once one has completed a blessing (said the Divine Name in the concluding formula), one may not go back — even if one has not yet begun the next blessing.

Rishonim
Early Acharonim
Late Acharonim
Lenient
Strict
Lesser cited
Major authority

Discussion

Discussion coming soon.

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