Step Eight identifies where our behaviour is wrong. It also identifies if and how we have harmed others.
Depending on the nature, severity, and circumstances of the wrong and the harm, there are six possible course of action. More than one may apply.
Amend: Full-blown Big Book amend. Where there is harm, an amend is due, except where the usual caveats apply.
Apology: Low-key apology. We've been out of line, no one has been harmed, but courtesy and manners demand an apology.
Acknowledgement of impact: A recognition that one has impacted another but without admitting fault. Practical, emotion, and psychological difficulties can negatively impact others. Where there was nothing we could or should reasonably have done differently in the circumstances, amends and apologies are inappropriate, but acknowledging impact is appropriate.
Thanks: Long-overdue thanks are often welcomed.
Remedial action: Return the book. Clean the mess. Clear the shelf.
Altered behaviour: Our behaviour was wrong but it's below the threshold for an amend or apology, and the 'acknowledgement conditions' are not met. This may apply, too, even where there is an amend or an apology due.
Tactical learning: Sometimes we don't handle something optimally but it wasn't wrong or harmful in any material way. Lessons can nonetheless be learned. This may apply in all of the above cases.