Runtime artifacts generation for mandatory fields of FM

Hi All,

I mapped a GET_ENTITY method to a BAPI (BAPI_GOODSMVT_GETDETAIL). In this BAPI there is one table GOODSMVT_ITEMS which is mandatory. Since my entity is corresponding to header, I mapped only header level properties and have not used the mandatory table. I regenerated the runtime artifacts.

Since this table was mandatory, the gateway framework should have created a internal table and passed it to the FM in the Get_Entity method. But this is not happening and I am getting error since mandatory fields are not passed. Below is the screenshots of my mapping and auto generated code.

What may be the cause of this behavior of SEGW tool?