These variables seem to be user defined. They read the user input in the exit code and populate the required value based upon the logic in the exit code. Check whether the processing type of these variables is of type Customer exit.
THerer are two of doing that. One is searching for SAP variable on the required IO and second is using your own by the way of customer exits.
First, I recommend you to search for the SAP variables on that particular IO and if they meet your requirement it okay. Else you need to go for customer exits to fulfil you requirement.
If installed you can find them in the query designer under that particluar IO. Else you can search for them using a generic name while searching in business content and install them.
You can drop more details in my mail mentioned in my first reply.
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.