Exam PL-400 topic 2 question 22 discussion

DRAG DROP -
A company has a Common Data Service (CDS) environment.
All accounts in the system with a relationship type of Customer set must have an account number. A plug-in has been developed.
When a Customer is updated with a relationship type, the plug-in sets the account number if not provided by the user.
You need to register the plug-in.
Which three actions should you perform in sequence? To answer, move the appropriate actions from the list of actions to the answer area and arrange them in the correct order.
Select and Place:

Suggested Answer:
Step 1: In the Plug-in Registration tool, select Register New Assembly.
You use the Plug-in Registration tool (PRT) to register your plug-in assemblies and steps.
Registering an assembly is the process of uploading the assembly to the Dataverse database.
Step 2: In the Plug-in Registration tool, Select Register New Step,..PreOperation
PreOperation occurs before the main system operation and within the database transaction.
If you want to change any values for an entity included in the message, you should do it here.
Step 3: In the Plug-in Registration tool, Select Register New Image, change the Image type to be a PreImage, and..
If your plug-in step is registered in the PreValidation or PreOperation stages of the execution pipeline, you could use the Organization service to retrieve the current value of the property, but this is not a good practice for performance. A better practice is to define a pre-entity image with your plug-in step registration.
Reference:
https://docs.microsoft.com/en-us/powerapps/developer/data-platform/register-plug-in