Describe the Use Cases for and Benefits of External IDs. PLATFORM-DEVELOPER-II Practice Questions (Page 3)

Questions 11–15

1. 11foundation · easy

   What is the definition of an external ID in Salesforce?

   • AA system-generated timestamp field used to track when a record was last modified by an external integration.
   • BA custom field that stores unique record identifiers from an external system.
   • CA lookup field that links a Salesforce record to a record in another Salesforce org.
   • DA standard field that Salesforce automatically populates with a globally unique record identifier.
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2. 12application · medium

   A company is integrating its billing system with Salesforce. The billing system uses a unique invoice number for each invoice. The integration needs to map each billing record to the corresponding Salesforce record so that updates from the billing system are applied to the correct Salesforce record. What is the best way to establish this mapping?

   • ACreate an external ID field on the Invoice object to store the billing system's invoice number and use it as the matching key in the integration.
   • BUse the invoice name field as the matching key, assuming invoice names are unique.
   • CUse the Salesforce record ID as the matching key in the integration.
   • DCreate a custom field to store the billing system's invoice number, but do not mark it as an external ID.
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4. 13application · medium

   A company integrates its e-commerce platform with Salesforce. Each product in the e-commerce system has a unique SKU. The integration team wants to ensure that when product data is synced, no duplicate product records are created in Salesforce. What is the most effective way to enforce this requirement?

   • ACreate a validation rule on the Product object that checks if the SKU already exists before saving.
   • BUse a workflow rule to flag potential duplicate SKUs after the record is created.
   • CCreate a custom field on the Product object, mark it as an external ID with unique values, and use it as the matching key in the integration.
   • DUse the standard Product Code field as the unique identifier for the integration.
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5. 14expert · hard

   A company is integrating its CRM with an external marketing platform. The marketing platform uses a unique subscriber ID for each contact. The integration needs to upsert contacts into Salesforce. However, the marketing platform sometimes sends the subscriber ID in different formats (e.g., with leading zeros or without). The company wants to ensure that the same subscriber is not duplicated in Salesforce. What is the best approach?

   • AStandardize the subscriber ID format in the integration before sending it to Salesforce, and use an external ID field to store it.
   • BUse a validation rule to check if the subscriber ID exists in any format before saving.
   • CUse the contact's email address as the external ID instead of the subscriber ID.
   • DUse a case-sensitive external ID field to store the subscriber ID as sent by the marketing platform.
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6. 15foundation · easy

   How do external IDs help prevent duplicate records?

   • ABy enforcing uniqueness on the field values, so no two records can have the same external identifier.
   • BBy automatically merging duplicate records when they are detected.
   • CBy requiring users to manually review all records before they are created.
   • DBy creating a validation rule that checks for duplicates on every record creation.
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