---
title: "SysMobPre"
canonical: "https://kb.myframeworks.com.au/space/FSS/13183792/SysMobPre"
format: markdown
---
**Setting Purpose: **List of valid mobile number prefixes

> ⚠️ The System Setting - Flag [https://sterlandsupport.atlassian.net/wiki/spaces/FSS/pages/13187745](https://sterlandsupport.atlassian.net/wiki/spaces/FSS/pages/13187745) ** **is required to be enabled.

Enter the list of allowed mobile number prefixes into the **Value **field, for example, 04 would only allow mobile numbers starting with 04 to be entered into the contact number field

> ℹ️ Multiple prefixes can be added with a comma separating them, for example, **04,05 **