We are having a scenario in which PDA devices would communicate to SAP systems through XI. PDA devicves would send a request and SAP responds back. This is a Synchronous scenario.
The interface is designed for operating personnel in warehouse who use PDAs for goods receipts. The volume of messages would be quite high and expected response would be fast and in real time.
We have defined PDA <-> XI Web Service <-> RFC at SAP end as the possible option for such interface.
XI gurus, kindly suggest if there could be any performance considerations in such a scenario.