Routine problem

Hello, i am writing this start routine in my dso but not getting any values in the internal table. can you see what am i doing wrong please and correct it please? I am trying to read delivery date from another dso and during my debugging when i double click on IN_IAN table after the select statement, i don't see anything.  I have already verified there is data in the other dso matching these keys. thanks

    TYPES: BEGIN OF S_IAN,
       /BIC/ZDLV_DT TYPE /BIC/AZMFS00-/BIC/ZDLV_DT,
       DOC_NUMBER TYPE   /BIC/AZMFS00-DOC_NUMBER,
       S_ORD_ITEM TYPE   /BIC/AZMFS00-S_ORD_ITEM,
       END OF S_IAN.

    DATA: IN_IAN TYPE STANDARD TABLE OF S_IAN.
    DATA: W_IAN TYPE S_IAN.

   SELECT /BIC/ZDLV_DT DOC_NUMBER S_ORD_ITEM INTO TABLE IN_IAN
    FROM
    /BIC/AZMFS00

    FOR ALL ENTRIES IN SOURCE_PACKAGE

    WHERE DOC_NUMBER = SOURCE_PACKAGE-DOC_NUMBER
    AND
    S_ORD_ITEM = SOURCE_PACKAGE-S_ORD_ITEM.