anchor.diff:  
   === Scenario 1a
   
  -In this scenario we assume that a `Subscription` was created using a `Plan` made of 2 `PlanPhases`, namely a `TRIAL` and an `EVERGREEN` phase, and the user **did not skip any `PlanPhase`**. Subsequently, the user issues a change `Plan` operation with a new `Plan` that has 3 `PlanPhases`, namely  a `TRIAL`, a `DISCOUNT` and an `EVERGREEN` phase. The suer specifies a `DISCOUNT` target `PlanPhase` when changing the `Plan`. The catalog was configured to use a `START_OF_SUBSCRIPTION` (or `START_OF_BUNDLE`) plan change alignment. 
  +In this scenario we assume that a `Subscription` was created using a `Plan` made of 2 `PlanPhases`, namely a `TRIAL` and an `EVERGREEN` phase, and the user **did not skip any `PlanPhase`**. Subsequently, the user issues a change `Plan` operation with a new `Plan` that has 3 `PlanPhases`, namely  a `TRIAL`, a `DISCOUNT` and an `EVERGREEN` phase. The suer specifies a `DISCOUNT` target `PlanPhase` when changing the `Plan`. **The catalog was configured to use a `START_OF_SUBSCRIPTION` (or `START_OF_BUNDLE`) plan change alignment**. 
   
   
   image:https://github.com/killbill/killbill-docs/raw/v3/userguide/assets/img/alignments/PlanAlignmentScenarioChange1a.png[align=center]
  
positive.code: We can see that we realigned based on the date of the change `Plan` operation and also start with the specified `DISCOUNT` target `PlanPhase`.
  
  
  
  
  
negative.code: 
  === Scenario 1b
  
  This scenario is similar to the previous one except for **the catalog that was configured to use a `CHANGE_OF_PLAN` plan change alignment**.
  
  image:https://github.com/killbill/killbill-docs/raw/v3/userguide/assets/img/alignments/PlanAlignmentScenario1b.png[align=center]
  
  