Kindly refer my previous blog for HTTP session located on Tomcat side https://blogs.sap.com/?p=584233 

For SAP login session timeout Go to Administration >>System Initialization>>General Settings>>Services tab>>Screen Locking Time (Min.) 

SAP B1 9.2 – login session timeout (holding by B1 processes) desktop versions

Make changes in this field Screen Locking Time (Min.)

Hope your issue resolved.

Tejas P.

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