Solution : https://service.sap.com/sap/support/notes/306537 (SAP Service marketplace login required)
Key words : 
additional key words cor1, add export parameters procnr_exp, processing function module terminates, function module ck_f_ppc_order_settle, missing customizing settings, source code correction, order processing problems, solution implement note 311630, determined automatically - independently, settlement rule manually
Related Notes : 
       
| 628210 | Program termination after reading BOM in collective order | 
| 597600 | Maintaining settlement rule after adding a co-product | 
| 546181 | Collective conversn: Incorrect dialg box in availablty check | 
| 539511 | No homogeneity list generated when planned order converted | 
| 506646 | Release key not taken into account at COR1 | 
| 395267 | No settlement rule to cost object | 
| 367208 | No assignment of prod.order to prod.cost collector | 
| 365904 | GR order: Internal error SAPLCKMLMVCONNECT | 
| 314305 | No distribution rule despite required receiver | 
| 313716 | COR1, CO01: Entering the settlement rule | 
| 311630 | Automatic confirmation of partial networks |