Print Pop-up on transmitting PO form

Hi,

I have 2 PO types using the same print program and message type for the PO form. But 1 form have the print-pop up when transmitting the message and the other doesnu2019t. What might be causing the inconsistencies? I need both PO types to have the print-pop up and be able to print them.

I have checked t-code NACE and both PO types are maintained in the same Message condition and they are using the same Print program.