Classter Knowledge Base

Enable Format Validation In Phone Inputs

App Settings › Main Settings › Basic Customization · Updated 2026-07-13

The Enable Format Validation in Phone Inputs setting controls whether the system checks that phone numbers entered in Classter match the accepted format for the selected country. When this setting is enabled, users must enter phone numbers in a valid format that complies with international telephony standards for the country chosen in the phone field.

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