---
title: "Access Cards Format "
slug: "access-cards-format"
updated: 2024-03-14T11:31:21Z
published: 2024-03-14T11:31:21Z
canonical: "help.nexudus.com/access-cards-format"
stale: true
---

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

# Access Cards Must Have Set Number of Digits

This rule lets you control the number of digits required for all access cards you add to {{variable.customers}} from the {{variable.AdminPanel}}. 

It is useful if your access cards have a set number of digits and you want to avoid any mistakes or typos when {{variable.admins}} add cards to a {{variable.customer}}'s account. 

* * *

1. {{snippet.FirstStepProcedure}}

2. {{snippet.ValidationRules_Path}}

3. {{snippet.AddValidationRule_Step}}
4. {{snippet.ManualEntry_Step}}
5. {{snippet.NameValidationRule_Step}}
6. {{snippet.DescriptionValidationRule_Step}} 
7. {{snippet.ActivateValidationRule_Step}} 
7. {{variable.SELECT}} **Customer** as the rule's **Record type**. 
8. {{snippet.ErrorMessageValidationRule_Step}}
9. {{snippet.FormulaValidationRule_Step}}
```
record.AccessCardId = null OR record.AccessCardId.Length = x
```
9. Replace the **x** after **record.AccessCardId.Length =** with the number of digits you require for access cards.

*In the example below, we added 10, meaning all access cards that we try to register for customers must be 10 digits.* 
```
record.AccessCardId = null OR record.AccessCardId.Length = 10
```
10. {{snippet.Save_Changes}}

* * *
All done! We recommend trying to assign an access card to a {{variable.customer}} using the wrong number of digits to test your rule. If you see your error message displayed as you try to save your changes, you're good to go.