Handling unit check error L3779

Question

Hi,
I am getting an error message in LH01 *Pick HU assignment only allowed with empty HUs
Message no. L3779*.
Can you tell me why I am getting this error for my plant only not with any other plant.
My functional counterpart has checked all the configuration and there seems no change in the settings.
Thanks and Regards,
Yashwin

Answer 1

Hello Yashwin
Search for this message on ECC 6.0 (Where-Used-List) I found just one occurrence (of course there may be additional indirect usages) in include ML03TFHU_F01_CHECK_211_EXIDV:
*** Check if HU is free but with stock on it
        if ivekpvb210-vpobj = con_vpobj_nichts or         "05
           ivekpvb210-vpobj = con_vpobj_frei   or         "06
           ivekpvb210-vpobj = con_vpobj_hulgort_frei.     "12
*         HU mustn't be assigned to a delivery or production order
          if ( ( lf_hu_is_empty is initial ) and
               ( not ltak-vbeln is initial or
                 not ltak-rsnum is initial ) ).
            message E779
                raising used_in_another_doc.
          else.
*           On a free HU with stock we need more checks below
            free_hu_check = con_x.
          endif.
        endif.
Perhaps looking through this coding (and debugging) might be helpful to come closer to the root cause of your problem.
Regards
  Uwe