Solution : https://service.sap.com/sap/support/notes/53726 (SAP Service marketplace login required)
Key words : 
additional key words recursion/low-level code, low-level code assignment, changed source code, sales order bom, add field stlnr, recursiveness check, table kdst, program lines, considered, prerequisites
Related Notes : 
       
| 68792 | Collective note for low-level code / recursiveness |