Solution : https://service.sap.com/sap/support/notes/1293588 (SAP Service marketplace login required)
Key words : 
/namespaces/       -> keys & requests -> development namaspaces       select 'generate key, component xx-proj-jp-phm, pat] <migration patch 02>message title, - customer number           - installation number           - addon namespace, xx-proj-jp-ekm, bpl users choosen optioni, sap service market place, ekpm related objects require, customer add-onthe customer, ekpm special procedure finished
Related Notes : 
       
| 1283257 | KJCPH: How to migrate from BPL to EKPM at 4.6C | 
| 610369 | Add-on Support Packages and CRTs for KJCPH | 
| 528791 | Release strategy for Emhance. Kit for Pharmaceuticals Manufa | 
| 150451 | Setting up development namespaces | 
| 84282 | Development namespaces for customers and partners |