ANS-1151 · CUSTOM FIELDS, RECORDS & FORMS
How to Ensure a Custom Field is Unique Per Record in NetSuite
Leverage SuiteScript to automatically assign a unique identifier to a custom field by linking it to the transaction's External ID.
Short answer
To ensure a custom field is unique per record in NetSuite, implement a SuiteScript. This script can be configured to automatically populate the custom field with the transaction's External ID, which is inherently unique. This method provides a robust solution for maintaining data integrity and uniqueness across records.
Scenario
Organizations often require a custom field on NetSuite records to hold a unique identifier, such as a contract number, that must be distinct for each transaction. The challenge lies in enforcing this uniqueness automatically and reliably across all records without manual intervention.
Solution
To ensure a custom field holds a unique value per record, a SuiteScript can be implemented. This script is designed to set the value of the custom field, for instance, a contract number, to be equal to the External ID of the transaction. The External ID is a unique identifier automatically assigned by NetSuite to each transaction, thereby guaranteeing the uniqueness of the custom field's value. It is important to note that while NetSuite now provides native validation and defaulting properties for custom fields, and SuiteScript can also be used for field-level validation, this method specifically utilizes the External ID for uniqueness.
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