Solution : https://service.sap.com/sap/support/notes/177185 (SAP Service marketplace login required)
Key words : 
additional key words mosp, status i0341 'mosp', production order network, ' production orders, credit check, expanding subnetwork, program error, solution execute, source code, implement notes 149947
Related Notes : 
       
| 366404 | Termination when enhancing subnetwork | 
| 174689 | VA02: Assembly block indicator is not reset | 
| 149947 | Status I0341 ASSB for assembly collective orders |