Object Manager and Lightning App Builder15% of the exam
Fields, page layouts and field deletion impacts
How to create and change custom fields (required, unique, external ID, roll-up summary, cross-object formula, dependent picklists), what page layouts, compact layouts and field-level security each control, and what happens when a field is deleted, restored or has its type changed.
Explain how to create, delete, and customize fields and page layouts on standard and custom objects, and know the implications of deleting fields (roll-up summaries, cross object formulas, picklist dependencies, relationship fields).
~7 min read · 16 practice questions ·
What the exam expects
- Choose the right field type and attributes for a requirement: roll-up summary, cross-object formula, universally required, unique and external ID.
- Configure dependent picklists and know which fields can control and which can depend.
- Separate what a page layout controls from what field-level security and compact layouts control.
- Predict what deleting a field does, including roll-up summaries, cross-object formulas, picklist dependencies and relationship fields, and how to restore it.
- Anticipate the risks of changing a custom field's data type.
Key facts
Deleted custom field retention
- Detail
- Restorable with its data for 15 days
Delete permissions
- Detail
- Customize Application and View All Data
Field referenced by another field
- Detail
- Can't be deleted until the reference is removed
Field history on delete
- Detail
- History data deleted; tracking stops
Restored field attributes
- Detail
- Unique and required removed; dependencies removed
Deleted relationship field
- Detail
- Converted to a lookup if restored
Required in field definition
- Detail
- Enforced everywhere in Salesforce, including the API
External ID fields per object
- Detail
- Up to 25 (Unique fields count toward it)
Roll-up summary types
- Detail
- COUNT, SUM, MIN, MAX, with optional filter criteria
Multi-select picklist
- Detail
- Dependent only, never controlling
Checkbox
- Detail
- Controlling only, never dependent
Controlling field values
- Detail
- Up to 300
Highlights panel (Lightning Experience)
- Detail
- First seven compact layout fields
Layout versus field-level security
- Detail
- Most restrictive setting applies
Sources for this section (7)
- Delete Custom Fieldshelp.salesforce.com (opens in a new tab)
- Restore Deleted Fieldshelp.salesforce.com (opens in a new tab)
- Field Attributeshelp.salesforce.com (opens in a new tab)
- Roll-Up Summaryhelp.salesforce.com (opens in a new tab)
- Dependent Picklistshelp.salesforce.com (opens in a new tab)
- Compact Layoutshelp.salesforce.com (opens in a new tab)
- Field Permissionshelp.salesforce.com (opens in a new tab)
- Which two permissions are needed to delete a custom field, and for how long can it be restored?
- Why must an admin revisit a field after restoring it?
- Where does a roll-up summary field live, and which four calculation types does it offer?
- Which field types can act as a controlling field for a dependent picklist?
- When a page layout marks a field required but field-level security makes it read-only, which setting wins?
The questions are free to read. Answers with their sources and self-grading are included with the pack.
Keep reading with the Platform Administrator pack
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