Transactions in sequence in data service
Below is an example:
You create one data service with two (2) transactions: first transaction is using OIS100MI/SearchHead that you name SearchCOHead, and the other transaction is using OIS120MI/GetCOStopInfo that you name GetCOStopInfo.
For GetCOStopInfo to retrieve the correct data, it requires input from SearchCOHead. It requires the order number from SearchCOHead because GetCOStopInfor has the ORNO field which requires input. You then take the name SearchCOHead and specify it in the value column of GetCOStopInfo together with the ORNO field and wrap it all within {}.
The value column in GetCOStopInfo then has this value:
{SearchCOHead.ORNO}
Now, GetCOStopInfo gets the correct input and can display data in your form component.