I found a very useful document on COPA extraction on this site (https://www.sdn.sap.com/sdn/developerareas/bi.sdn?page=BW_How_To.htm) and I will encourage beginners like myself to review it.
All worked for me except that, I had read elsewhere you need to verify that there is data in your datasource that you create on R/3 before proceeding further. (This information was not in the link though).
All instructions in the link worked for me and I successfully loaded data into my Cube but any reason why the transaction rsa3 cant find my datasource on R/3?
In fact, when I browsed, I did not find one customer created datasouce, they were all 0xxxxx datasources and mine, 1_CO_PA_E13_TST_YFZ was not there. Basically I could not even verify whether there was data in my datasource. Any help on this?
In related matter, after loading the data, that is going through the whole InfoPackage steps, and doing the Init Delta Method, I browsed through the Cube to see if there was any data. The structure was in place but no actual data. Any hints here?