Solution : https://service.sap.com/sap/support/notes/1498860 (SAP Service marketplace login required)
Key words :
asynchronous action box transaction destined, action box transaction, function modules parameters, call function starting, short dump message_type_x, short dump, terms message_type_x, automation call, cic session, sessions till
Related Notes :
| 1359637 | Synchronous calls: Error message 'Maximum sessions reached' |
| 710920 | CALL_FUNCTION_OPEN_ERROR for six external sessions |