How To Fix SO558 - You can only send to & recipients of another SAP System

SO558 - Overview

• Message type: E = Error

• Message class: SO - SAPoffice: message texts

• Message number: 558

• Message text: You can only send to & recipients of another SAP System

What causes this issue?

The maximum number of recipients allowed per send operation was
exceeded. This number is defined in the SAP user master.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Check your Office user to see how many recipients you can address. To
send the document to all recipients, carry out several send operations.

Error message extract from SAP system. Copyright SAP SE.

SO558 - Details

• The SAP error message SO558 indicates that you are trying to send an email or a message to recipients that belong to another SAP system, which is not allowed in the current configuration. This typically occurs in scenarios where the SAP system is set up to restrict communication to only those users within the same system.
  
  Cause:
  
  Cross-System Communication Restrictions: The SAP system is configured to prevent sending messages to users in different SAP systems. This is a security measure to avoid unauthorized access or data leakage.
  Incorrect Recipient Address: The recipient's email or user ID may belong to a different SAP system or is not recognized by the current system.
  
  Configuration Issues: The settings in the SAPconnect (SCOT) configuration may not allow for cross-system communication.
  
  
  Solution:
  
  Check Recipient Details: Ensure that the recipient's email address or user ID is correct and belongs to the same SAP system.
  Review SCOT Configuration: 
  Go to transaction code SCOT in