The below code provides the packspec quantity of a material in EWM.
data:
lv_matnr type /scwm/de_rf_matnr,
lv_matnrd type /scwm/s_rf_unlo_prod-rfprod,
it_matid type /scmb/mdl_matid_tab,
wa_matid type line of /scmb/mdl_matid_tab,
is_content_query type /scwm/s_ps_content_query,
et_packspec_content type /scwm/tt_packspec_nested,
wa_packspec_content type line of /scwm/tt_packspec_nested,
et_ps_keys type /scwm/tt_ps_header_key,
wa_ps_keys type line of /scwm/tt_ps_header_key,
ev_severity type bapi_mtype,
et_return type bapirettab,
cv_max_rows type int4,
iv_guid_ps type /scwm/de_guid_ps,
es_packspec_level type /scwm/s_ps_level_int,
it_levels type /scwm/s_packspec_nested-levels,
wa_levels type line of /scwm/s_packspec_nested-levels,
lv_packspec_qty type p decimals 3.
*lv_matnr = <material number>
call function 'CONVERSION_EXIT_MDLPD_INPUT'
exporting
input = lv_matnr
importing
output = lv_matnrd.
wa_matid-matid = lv_matnrd.
append wa_matid to it_matid.
clear wa_matid.
clear is_content_query.
clear et_packspec_content.
is_content_query-matid = it_matid.
call function '/SCWM/API_PACKSPEC_GETLIST'
exporting
is_content_query = is_content_query
importing
et_ps_keys = et_ps_keys
ev_severity = ev_severity
et_return = et_return
changing
cv_max_rows = cv_max_rows.
clear wa_ps_keys.
read table et_ps_keys into wa_ps_keys index 1.
clear iv_guid_ps.
iv_guid_ps = wa_ps_keys-guid_ps.
clear et_packspec_content.
call function '/SCWM/PS_PACKSPEC_GET'
exporting
iv_guid_ps = iv_guid_ps
importing
et_packspec_content = et_packspec_content
es_packspec_level = es_packspec_level
exceptions
error = 1
others = 2.
if sy-subrc <> 0.
* Implement suitable error handling here
endif.
clear wa_packspec_content.
read table et_packspec_content into wa_packspec_content index 1.
it_levels = wa_packspec_content-levels.
clear wa_levels.
read table it_levels into wa_levels index 1.
lv_packspec_qty = wa_levels-trgqty.