The term 'abcd' is not recognise as the name of a cmdlet, function, etc...

Please share script with the error to look further

The error message you're encountering suggests that PowerShell is unable to recognize the command you're trying to use. This could be due to a few reasons:

1. The command you're trying to use ('abcd' in this case) is not a valid PowerShell cmdlet or function.

2. If you're trying to use AWS-specific commands, you may not have the necessary AWS Tools for PowerShell installed or loaded.

To use common PowerShell commands and AWS-specific cmdlets in the CLI, you need to ensure that you have the proper modules installed. For AWS-related tasks, you should install the AWS Tools for PowerShell. Here's how you can do that:

1. Open PowerShell as an administrator.

2. Run the following commands to install AWS Tools for PowerShell and its modules:

   Install-Module AWS.Tools.Installer Install-AWSToolsModule AWS.Tools.Common, AWS.Tools.EC2, AWS.Tools.S3 (add other modules as needed)

3. After installation, you can use AWS cmdlets in your PowerShell scripts.

If you're still having issues with specific commands, make sure they are valid PowerShell cmdlets or AWS Tools for PowerShell commands. You can use Get-Command to check if a cmdlet exists, for example: Get-Command aws

Remember to set up your AWS credentials properly in PowerShell for AWS-related commands to work. You can do this by using the Set-AWSCredential cmdlet or by configuring a named profile.

If you continue to face issues, double-check your script for typos and ensure that you're using the correct syntax for the commands you're trying to execute.
Sources
Export a report of AWS IAM Identity Center identities and their assignments by using PowerShell - AWS Prescriptive Guidance