---
title: How to configure validations on a Multi Resource Selector Process Parameter?
description: Users can configure validations on Multi Resource Selector Process Parameters by defining validation rules and error messages.
---

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# How to configure validations on a Multi Resource Selector Process Parameter?

## Users can configure validations on Multi Resource Selector Process Parameters by defining validation rules and error messages.

1\. Log in to the system.

![](https://support.leucine.io/hs-fs/hubfs/image-png-Feb-03-2025-09-12-39-8922-AM.png?width=1920&height=1080&name=image-png-Feb-03-2025-09-12-39-8922-AM.png)

2\. Ensure there is an existing prototype.

![](https://support.leucine.io/hs-fs/hubfs/image-png-Feb-03-2025-09-13-01-9781-AM.png?width=1920&height=1080&name=image-png-Feb-03-2025-09-13-01-9781-AM.png)

3\. Navigate to a prototype.

4\. Navigate to a task.

![](https://support.leucine.io/hs-fs/hubfs/image-png-Feb-03-2025-09-13-46-0087-AM.png?width=1920&height=1080&name=image-png-Feb-03-2025-09-13-46-0087-AM.png)

5\. Click on 'Add Activity'.

![](https://support.leucine.io/hs-fs/hubfs/image-png-Feb-03-2025-09-14-42-7092-AM.png?width=1920&height=1080&name=image-png-Feb-03-2025-09-14-42-7092-AM.png)

6\. Click on 'Parameters' and then click on 'Add New'.

![](https://support.leucine.io/hs-fs/hubfs/image-png-Feb-03-2025-09-14-53-3538-AM.png?width=1920&height=1080&name=image-png-Feb-03-2025-09-14-53-3538-AM.png)

7\. Provide a label.

![](https://support.leucine.io/hs-fs/hubfs/image-png-Feb-03-2025-09-15-03-1431-AM.png?width=1920&height=1080&name=image-png-Feb-03-2025-09-15-03-1431-AM.png)

8\. Select 'Multiple Resource Selector' in Parameter Type.

![](https://support.leucine.io/hs-fs/hubfs/image-png-Feb-03-2025-09-15-13-0729-AM.png?width=1920&height=1080&name=image-png-Feb-03-2025-09-15-13-0729-AM.png)

9\. Navigate to the validations tab.

![](https://support.leucine.io/hs-fs/hubfs/image-png-Feb-03-2025-09-15-30-6947-AM.png?width=1920&height=1080&name=image-png-Feb-03-2025-09-15-30-6947-AM.png)

10\. Select execution type as 'Halt Parameter Exception'.

11\. Apply the applicable validation rule and enter the error message.

![](https://support.leucine.io/hs-fs/hubfs/image-png-Feb-03-2025-09-15-37-1664-AM.png?width=1920&height=1080&name=image-png-Feb-03-2025-09-15-37-1664-AM.png)

12\. Click on save.

![](https://support.leucine.io/hs-fs/hubfs/image-png-Feb-03-2025-09-16-18-2440-AM.png?width=1920&height=1080&name=image-png-Feb-03-2025-09-16-18-2440-AM.png)

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