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Unable to validate phone number

The article contains solutions to possible phone number validation problems.

Problem

The following problems may occur when validating a phone number:

  • unable to register with a current phone number. The system requires you to enter additional characters;
  • phone number validation fails. After entering the number, an error is displayed The 'Phone number' field has an invalid value;
  • when specifying a country on the registration form, an incorrect country code is automatically added. 

Solution

Specify the correct format of the phone number:

  1. Enter DirectoriesCountries → select a country → Edit.
  2. Check the following:
    1. Mask for the phone number in the Phone number format field. For example, in standard numbers, the country code is followed by a three-digit mask. If a two-digit mask is required for the selected country, specify it;
    2. Country code in the Phone code field. If an incorrect code is specified, edit it.


Example showing proper two-digit mask and phone code format

Useful tips
The article was last updated on 07.11.2025. The article was prepared by technical writers of ISPsystem