How To Fix PT011 - Recipient "&" is not a valid user name

PT011 - Overview

• Message type: E = Error

• Message class: PT - Messages for ABAP print functions

• Message number: 011

• Message text: Recipient "&" is not a valid user name

What causes this issue?

Invalid user name.

How to fix this error?

Enter a valid user name. For a list of valid names, press F4.

Error message extract from SAP system. Copyright SAP SE.

PT011 - Details

• The SAP error message PT011, which states "Recipient '&' is not a valid user name," typically occurs in the context of workflows, notifications, or when sending messages within the SAP system. This error indicates that the system is unable to recognize the specified recipient as a valid user.
  Causes:
  
  Invalid User ID: The recipient user ID specified in the workflow or notification does not exist in the SAP system.
  User Deactivation: The user may have been deactivated or deleted from the system.
  Incorrect Formatting: The user ID may have been entered incorrectly, including typographical errors or incorrect case sensitivity.
  Authorization Issues: The user may not have the necessary authorizations to receive messages or notifications.
  Missing User Master Data: The user master data may not be fully maintained, such as missing email addresses or communication details.
  
  Solutions:
  
  Verify User ID: Check the user ID specified in the error message. Ensure that it is correctly spelled and formatted.
  Check User Status: