Mail user creation failed! Cannot process argument transformation on parameter 'MicrosoftOnlineServicesID'

Question

Hello,

In Exchange Admin Center->Recipients->Contacts and I choose Add a mail user, after filling in the necessary information it just reports this error.

Mail user creation failed!

*Cannot process argument transformation on parameter 'MicrosoftOnlineServicesID'. Cannot convert value " ******@domain.cz" to type "Microsoft.Exchange.Data.WindowsLiveId". Error: "' *****@domain.cz' doesn't conform to the Windows Live ID format or the SMTP address format. It has to be a Windows Live ID or an SMTP address and can't start or end with blank spaces."

The error is not in the entered data, a colleague can create it because he has a global administrator, which only he must have.

However, in the Office 365 Admin Center, user roles can be edited more extensively and assigned only certain permissions.

So I want to ask what exactly do I have to allow to make it work for me without being a global administrator?

Please help

Thank you

Answer 1

Dear MichalRama,

Good day! Thank you for posting to Microsoft Community. We are happy to help you.

Based on your description, I understand that you have a query "Mail user creation failed! Cannot process argument transformation on parameter 'MicrosoftOnlineServicesID'".

Based on the error message you provided, it seems that the issue is related to the format of the email address you entered. Please make sure that the email address you entered does not contain any leading or trailing spaces and that it follows the correct format for a Windows Live ID or SMTP address.

Regarding your question about user roles and permissions, to create a mail user in Exchange Admin Center, you need to have the "Recipient Management" role assigned to your account. This role allows you to create, modify, and remove recipients in Exchange Online. You can ask your Office 365 administrator to assign this role to your account if you don't have it already.

I hope this helps! Let me know if you have any further questions.