Hello .
The problem is solved.
The BP_CONFIRM processing must be not in ICCMP_DOC_LINK component.
The right place is ICCMP_INBOX/InboxItems component ,method EH_ONITEMPREVIEW of implementation class.
In standard configuration context area filling in class CL_BSPWD_BASICS_WA_HOST_VS , method SET_WORKAREA_CONTENT, before DO_PREPARE_OUTPUT of ICCMP_DOC_LINK implementation.
Thank to all.
Igor