Assert Condition Violated Dump

Hello Experts , 

I ran into an issue while generating Runtime Objects for a project in SEGW and getting Runtime Dump soon after mapping the data source to GetEntity and GetEntityset methods . I Created a Data Model for an RFC and it is having the code as below.  Log file attached with this discussion .

Could you please suggest a solution for the problem occured.

Function Module Code:

DATA : im_date TYPE p0001-begda,

           it_status TYPE STANDARD TABLE OF zso_msg ,

           wa_status TYPE zso_msg,

           w_output TYPE zso_msg,

           t_date TYPE dats,

           g_date TYPE dats,

           days(2) TYPE c,

          month(2) TYPE c,

          year(4) TYPE c,

          date_p(10) TYPE c, "Past Date

          date_c(10) TYPE c. "Current Date

   im_date =  sy-datum.

CALL FUNCTION 'RP_CALC_DATE_IN_INTERVAL'

     EXPORTING

       date      = im_date "SY-DATUM

       days      = im_days

       months    = '0'

       signum    = '-'

       years     = '0'

     IMPORTING

       calc_date = t_date.  "Past History Date

RANGES : s_date FOR g_date .

   s_date-low = t_date ."date_p .

   s_date-high = im_date ."date_c.

   s_date-sign = 'I' .

   s_date-option = 'EQ'.

   APPEND s_date .

SELECT mandt                    "Client

              functioncall            "Type of Posting

              customer               "Customer Number

              po_num_cust         "Customer purchase order number

             salesorder_num       "Sales and Distribution Document Number

             date_c                    "Field of type Dats

   FROM zso_msg

     INTO TABLE it_status

WHERE customer = customer

     AND date_c BETWEEN s_date-low AND s_date-high .

Appreciate your help.

Thanks.