Solution : https://service.sap.com/sap/support/notes/303281 (SAP Service marketplace login required)
Key words : 
company periodic period closed prior, joint venture cost center, post-cper  billable posting, post-cperb billable posting, jv posting period closed, post billable lines, additional key words, month end process, month end processes, runs month end
Related Notes : 
       
| 113639 | Billable CO postings after closing of JV period | 
| 112286 | Authority for JVA |