Solution : https://service.sap.com/sap/support/notes/112779 (SAP Service marketplace login required)
Key words :
variant vari assign selection variable prefixi, report creates selection variables, customer outline agreements, additional key words, collective processing number, selection variables, variable names, selection parameter, coa number, report rjhaab00
Related Notes :
145092 | Tuning in billing and settlement |
114216 | IS-PAM: Too large SELECT with COA settlement |