T Code to get the data received from external system

Hi Experts,

We person outer strategy which we usage to execute the process order. We received the information from this strategy to make batch successful S4, to contented the goods against the bid and goods receipt against the order. Sometimes the batch is not created for the circumstantial works and we besides look the contented for goods issuance. Can you pls assistance maine however I tin find that what information we are receiving from that outer strategy and wherever I tin cheque that. Also tin you pls supply what are RFC we usage for batch creation, goods issuance and goods receipt.