How To Fix SO651 - <&> already exists in the recipient list

SO651 - Overview

• Message type: E = Error

• Message class: SO - SAPoffice: message texts

• Message number: 651

• Message text: <&> already exists in the recipient list

What causes this issue?

A recipient was entered twice (for example, once with the address name
and once with the SAPoffice name).

System Response

The system removes the duplicate entry.

Error message extract from SAP system. Copyright SAP SE.

SO651 - Details

• The SAP error message SO651 indicates that there is an issue with the recipient list in the context of sending emails or notifications. Specifically, it means that the recipient you are trying to add to the list already exists in that list. This can occur in various scenarios, such as when sending emails through SAP Business Workflow, SAPscript, or Smart Forms.
  
  Cause:
  
  Duplicate Recipient: The primary cause of this error is that the recipient (email address or user ID) you are trying to add is already included in the recipient list.
  Workflow Configuration: In workflows, if the same user is assigned multiple times to a task or notification, this error can occur.
  Programmatic Issues: If you are using custom code or programs to send emails, there may be logic that does not check for existing recipients before adding them.
  
  
  Solution:
  
  Check Recipient List: Review the recipient list to ensure that you are not trying to add