User exit does not work without break point

Hi all,

I implement the user exit EXIT_SAPMV45A_002 to create a billing document after to save the order in the database from the VA01 tranasaction, if I put a break point in the user exit the code is run and create the billing document but if I do not put a break point does not run the code, I went back to activate the user exit and the project(cmod) but did not work, I put a message to try that is running use exit but the message does not show.

Best regards,

Robert