BAPI not returning values when used in ABAP code

Hello Gurus,

I am using BAPISDORD_GETDETAILEDLIST in my code to fetch Partner Address and Name. For that, I have passed values as below:

ls_bapi_view-PARTNER = 'X'.

ls_sales_documents-VBELN = Sales order number.

Append ls_sales_documents to lt_sales_documents.

And then execute the function in SE37, it returns value in order_partners_out and order_address_out.

But when I am calling this FM in my code and passing same values, it is not returning anything. Below are the declarations, I have written:

        ls_bapi_view   LIKE order_view,

        lt_sales_documents      TYPE STANDARD TABLE OF sales_key,

        ls_sales_documents      like LINE OF lt_sales_documents,

        lt_order_partners_out   TYPE STANDARD TABLE OF bapisdpart,

        ls_order_partners_out   like LINE OF lt_order_partners_out,

        ls_order_address_out    like bapisdcoad,

        lt_order_address_out    TYPE STANDARD TABLE OF bapisdcoad.

I somehow feel the problem is with the declarations. Please anyone can just try it, it is very easy and put some light on the resolution.

Thanks,

Maninder SA