Error : ERR_* = . ..

- SqlSeries (
              - Debit   <
                          CID : Sender,
                          Sum : Amount
                        >,
                Credit  <
                          CID : Receiver,
                          Sum : Amount
                        >,
                Journal < 
                          Opcode : JR_TRANSFER,
                          CID_1  : Sender, 
                          CID_2  : Receiver, 
                          Amount : _     
                        >
            )
Else (Ec, Error) 
 Log Error; Handle Ec
 ^/Error = Ec
;

If !Error then
 ...
Else
 ...
;