Solution : https://service.sap.com/sap/support/notes/549248 (SAP Service marketplace login required)
Key words : 
program              sapmv45a form routine         text_symbol_replace save, create output condition record select, ba00 select key combination, condition type ba00, prerequisites faq solution 1, ctrl+shift+f2, output type ba00, replace symbols sets, sales order confirmation, ba00 select details
Related Notes : 
       
| 960088 | FAQ: Sending SD messages externally |