The Db2 i database has RCAC (Row and Column Access Control) rules active for the specified table. These RCAC rules might impact the number of rows that are returned and the values of the columns based on user-defined RCAC rules.
Verify the rules that are in place with your database security administrator. Update them if needed. Alternatively, run the PowerExchange task for a user that is not impacted by the active rules that are in place for the table.