LSMW Mass create Handling Unit thru Business Object B3070 - Mapping failed

Dear Gurus, I created a LSMW task with Business Object BUS3070 to wide make Handling unit. And details arsenic below,

Define Source Structures

Define Structure Relations

Specify Files

Display Read Data

Display Converted Data

All the items successful the record of ItemProposal are added into the past point of HeaderProposal.

How I tin representation the records 1 by 1 successful the header and point file? Whether the operation E1BPHUITEM Structure for Handling Unit Item tin beryllium utilized for physique the mapping betwixt E1BPHUHDRPROPOSAL and E1BPHUITMPROPOSAL? If yes, however I should capable the information successful E1BPHUITEM?

Thanks.

Steve