Solution : https://service.sap.com/sap/support/notes/498627 (SAP Service marketplace login required)
Key words :
call function 'rfc_connection_close' exporting destination = xxxx, performance reasons transactions va01/va02, global availability query atp, existing rfc logon remains, replace variable xxxx, accelerate subsequent accesses, end user remains, user exit userexit_refresh_document, sales document processing, system checks materials
Related Notes :
| 700659 | Security Guide: mySAP Supply Chain Management |
| 381348 | Using user exit, customer exit, VOFM in SD |