Hello Vimal,
Try to use "COM_CUXI_GET_MULTI_CFG" function module and keep break point at "select" abap command. in between you will find the database table names for the et_config.
Here one thing you have to notice is crm_order_read will call the function module "COM_CUXI_GET_MULTI_CFG" to read the config data.
Br,
Navn