IDOC Simulator in SAP GTS

Hello Friends,

I found 2 IDOCs simulator in SAP GTS as below

• /SAPSLL/IDOC_SIM
• /SAPSLL/CDOC_ACT_CLO

Could you please help me on below points

• How to use the above IDOC simulators
• How to configure the system to use the above said simulators

Awaiting your earliest reply

Thanks & Regards

Rahul