Error
Error Code:
1036
SAP S/4HANA Error 1036: Invalid Session ID
Description
This error indicates that the active user session is no longer valid or recognized by the SAP S/4HANA system. It commonly occurs when a session has expired, been terminated, or when there's an issue with session data.
Error Message
ERR_SES_INV_SESSION
Known Causes
4 known causesSession Timeout
The user's session expired due to a period of inactivity, causing the system to invalidate it.
Browser Data Corruption
Outdated or corrupted browser cache and cookies can interfere with valid session token handling.
Network Interruption
A temporary loss of network connectivity can disrupt the session's continuity and lead to invalidation.
Server-Side Invalidation
The SAP S/4HANA server may have explicitly invalidated the session for security reasons or system maintenance.
Solutions
4 solutions available1. Restart SAP Gateway Service easy
A common cause for invalid session IDs is a temporary issue with the SAP Gateway service.
1
Log in to your SAP S/4HANA application server instance as an administrator.
2
Access the SAP Management Console (SMConsole) or use transaction SMGW.
3
Navigate to the Gateway administration section. The exact path might vary slightly based on your SAPGUI version and system configuration, but look for 'Gateway' or 'Services'.
4
Locate the option to restart the Gateway. This is often represented by a 'Restart' button or a menu option.
5
Confirm the restart operation. The Gateway service will be stopped and then started again. This will invalidate all existing sessions, so inform users before proceeding.
6
After the Gateway restarts, ask the affected users to try connecting again.
2. Clear Browser Cache and Cookies easy
For web-based access (Fiori, Web Dynpro), corrupted or outdated session information in the browser can lead to this error.
1
Instruct the affected user(s) to close all instances of their web browser.
2
Open the browser's settings or preferences.
3
Navigate to the privacy or security section.
4
Find the option to clear browsing data. Ensure that 'Cookies and other site data' and 'Cached images and files' are selected.
5
Select a time range, such as 'All time' or 'Last 24 hours', to ensure all potentially problematic data is removed.
6
Click the 'Clear data' or equivalent button.
7
Reopen the browser and attempt to access SAP S/4HANA again.
3. Verify and Restart SAP System Instance medium
A more comprehensive approach involving restarting the entire SAP S/4HANA application server instance.
1
Log in to the SAP S/4HANA application server operating system as a user with administrative privileges (e.g., `<sid>adm`).
2
Check the status of the SAP instance using the `sapcontrol` command. Replace `<instance_number>` with your system's instance number.
sapcontrol -nr <instance_number> -function GetProcessList3
If the instance is not running or shows an unhealthy status, stop the SAP instance gracefully. This will terminate all active sessions.
sapcontrol -nr <instance_number> -function Stop4
Wait for the instance to fully shut down. You can monitor this using `sapcontrol -nr <instance_number> -function GetProcessList` again.
5
Start the SAP instance.
sapcontrol -nr <instance_number> -function Start6
Wait for the instance to start completely. Verify its status with `sapcontrol -nr <instance_number> -function GetProcessList`.
7
Once the instance is fully operational, ask users to try connecting again.
4. Check SAP Gateway Configuration (SMGW/SMGWMON) advanced
Investigate the SAP Gateway's configuration and active connections for potential issues.
1
Log in to your SAP S/4HANA system using SAPGUI.
2
Execute transaction code `SMGW` to access the Gateway Monitor.
3
From the `SMGW` screen, navigate to 'Goto' -> 'Logged on Clients'. This will display all currently logged-on users and their session information.
4
Examine the list for any suspicious entries, excessive numbers of sessions for a single user, or sessions that appear to be stuck or invalid. Pay attention to the 'Host' and 'Program' columns.
5
If you identify problematic sessions, you can attempt to terminate them from the 'Logged on Clients' screen. Select the session and use 'Edit' -> 'Delete'. **Caution: This will immediately disconnect the user.**
6
Also, check the Gateway's security settings. Navigate to 'Goto' -> 'Security' -> 'Display'. Ensure that external access is appropriately configured and that there are no overly restrictive rules that might inadvertently invalidate sessions.
7
If you suspect a configuration issue or persistent problems, consider reviewing the Gateway trace files (SMGW -> 'Goto' -> 'Trace' -> 'Gateway' -> 'Display'). Look for error messages or patterns that correlate with the 'Invalid Session ID' error.
8
If necessary, consult with your SAP Basis team or SAP support to analyze the Gateway logs and configuration in detail.