---
title: "What are invalid characters and field length in CRM?"
slug: "what-are-invalid-characters-and-field-length-in-crm"
updated: 2026-04-20T14:53:21Z
published: 2026-05-21T21:25:40Z
canonical: "help.8x8.com/what-are-invalid-characters-and-field-length-in-crm"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.8x8.com/llms.txt
> Use this file to discover all available pages before exploring further.

# What are invalid characters and field length in CRM?

## Question

What are invalid characters and maximum character length in CRM?

## Applies To

- 8x8 Contact Center
- CRM

## Answer

The **Field Name** can contain the following values: A-Z, 0-9, _. The maximum character length is 32. The **Display Label** can contain any character except ~ and the maximum character length of the Display Label is 32.

You can enter an unlimited number of **Pick List Values** with a maximum character length of 32 for each. To organize the order of the Pick List and define the default value, click **More** then Sort Alphabetically.

Configuration Manager will not process successfully if invalid characters or symbols are entered. Invalid characters are special characters such as & ~ ! @ # $ % ^ * ( ) _ - + =