Solution : https://service.sap.com/sap/support/notes/561507 (SAP Service marketplace login required)
Summary : 
      This SAP Note specifies mandatory implementation of Notes 579205 and 579987 post-implementation, catering to interface changes, and Note 593428 for users of Release 4.6C. It enhances the BAPI_PO_CHANGE functionality to allow adding, modifying, or deleting services and limits within service items. Important enhancements include changes to item accounts under categories B and D, multi-accounting capabilities for services (not limits), and the ability to modify multiple items simultaneously. Restrictions include non-modifiability of service specification outlines and limitations to functionalities matching online capabilities. Necessary pre-implementation includes Note 494759, and several function modules and structural enhancements such as EXTREFKEY are introduced.
Key words : 
l2012f41 l2012f42 l2012f43 l2012f44 l2012f45 l2012f46 6, external reference key field extrefkey, reference table field esll-meins, reference table field essr_waers, add service specifications outlines, edit -> interface -> globalize parameter, add entire service items, component type extrefkey, required entry fields, component type del
Related Notes : 
       
| 675826 | SP08 Notes for EBP 3.5 | 
| 628397 | SAPKU30015: Support Package 15 for EBP 3.0/CRM 3.0 | 
| 620955 | Support Package 07 notes for EBP 3.5 | 
| 609353 | SAPKU30014: Support Package 14 for EBP 3.0/CRM 3.0 | 
| 597764 | Support Package 06, notes for EBP 3.5 | 
| 593428 | BAPI_PO_CHANGE: New Include and structure enhancements | 
| 583756 | Problems with report RM06ENMW | 
| 579987 | Dump due to incorrect interface 2: UESLL instead of ESLL | 
| 579205 | Dump due to incorrect interface: UESLL instead of ESLL | 
| 575041 | SP05 notes for EBP 3.5 | 
| 574952 | SP04 / SR 1 - Notes for EBP 3.5 |