Solution : https://service.sap.com/sap/support/notes/586409 (SAP Service marketplace login required)
Key words : 
delnr               type delnr                     delps               type delps export                     if_local            type xfeld tables                     et_qtkey, gstru               type t190v-gstru                     plobj               type pgan-plobo tables                     et_enqtab, quotp6                     et_object          type tbl_quot_object   optional flag set, qv04v                     et_qtcor            type quota_cor function module, if_posnr            type delps             pass, if_posnr            type delps            pass, if_disc_alloc      type xfeld             pass, if_disc_alloc      type xfeld            pass, bte für pers_enq_quot_write diskr, bte für pers_enq_quot_write kumul
Related Notes : 
       
| 708736 | Release limitations concerning R/3 Plug-In 2004.1 | 
| 633065 | |
| 601105 | Release restrictions R/3 Plug-in 2003.1 |