The IsCustomerPortal field on the Account object controls whether an account is designated as a Customer Portal account in Salesforce.
When set to 'true', the account is treated as a Customer Portal account; when set to 'false', it is disabled.
This article explains how to use Salesforce Data Loader to mass update this field and disable multiple Customer Portal accounts at once.
Data Loader can be used to mass disable customer Accounts. After preparing a file with the list of customer Accounts, you may set the IsCustomerPortal field to false to disable them.
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