Stop Creation of Logs in SGL1

Hello All,

I am using  ISU_INV_BILLDOC_PROCESSING for Invoice simulation. To handle warning / information mesages triggered by this FM I am using

MSG_OPEN,MSG_PREPARE_CLOSE,MSG_ACTION,MSG_CLOSE. I see logs are created in SGL1 as it like processing through EA18 transaction. Our requirement is to stop this creation of logs. How can we stop them ?

Regards,

Avishek