How To Fix 12821 - Disallowed session chosen in function module '&'

12821 - Overview

• Message type: E = Error

• Message class: 12 - Herstelldatum/Mindesthaltbarkeitsdatum/Chargen

• Message number: 821

• Message text: Disallowed session chosen in function module '&'

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message 12821 - Disallowed session chosen in function module '&' ?

  The SAP error message 12821, which states "Disallowed session chosen in function module '&'", typically occurs when there is an attempt to use a session that is not permitted or is in an invalid state. This can happen in various scenarios, particularly when dealing with background processing or session management in SAP.
  
  Cause:
  
  Invalid Session: The session being referenced may have been closed or is not in a valid state for the operation being performed.
  Session Management: The function module may be trying to access a session that is not allowed due to system settings or user authorizations.
  Background Processing: If the function module is being called in a background job, it may not have access to certain sessions that are only available in the foreground.
  
  Configuration Issues: There may be configuration settings in the SAP system that restrict access to certain sessions.
  
  
  Solution:
  
  Check Session Status: Verify the status of the session being accessed. Ensure that