---
title: "SysMobFrc"
canonical: "https://kb.myframeworks.com.au/space/FSS/13187745/SysMobFrc"
format: markdown
---
**Flag/Setting Purpose: **Force Mobile number on Site Contact Phone

- When enabled, the **Contact Phone **field becomes mandatory when creating a new order or modifying an existing order.
  - The following **System Settings** are required to be defined for validation when SysMobFrc is enabled.
    - **System Setting - General**: SysMobPre - Defines the allowed number prefixes.
    - **System Setting - Numeric**: CusPhLen - Defines the required number length.
- When disabled, the **Contact Phone **field is NOT mandatory and the above validations are NOT used, even if defined.