Resolving problems that occur when debugging message flows Advice on dealing with some of the common problems that you see when debugging message flows. About this task Resolving problems that occur when starting and stopping the debugger An endless "waiting for communication" progress bar is displayed when you start the debugger The debugger seems to stop The session ends abnormally while debugging An error message is displayed indicating that the debug session cannot be launched Errors are generated when you copy a message map into an application, library, or integration project Resolving problems when debugging message flows The debugger does not pause at the next breakpoint The message does not stop executing at any breakpoint Editing problems occur in the Message Flow editor Editing the MQ message descriptor (MQMD) causes unexpected behavior in the debugger You cannot see the message content when debugging your message flow An exclamation mark appears above a node during debugging The message does not stop processing at breakpoints Resolving problems that occur after debugging: You cannot change a message flow after debugging You redeployed a debugged message flow but deployment hangs