FI-CA Manual outgoing cheque printing

Hi experts,

I'm facing some issues printing the cheques created from FP50 - Manual outgoing cheque Lot. Does this transaction send cheque form automatically to the spool or there must be another transaction to print the created cheque.

I also tried to use FPCH1 Online cheque printing and enter the document number created with FP50, but system issues the message FKCHK311 :

"A check has already been issued for payment document"

Can someone guide me through the required steps to have cheques created from FP50 sent to the spool ?

Thanks in advance.

Karim