DEBUGGING_IMPOSSIBLE SAP ABAP Runtime Error debugging impossible

DEBUGGING_IMPOSSIBLE is an ABAP runtime error which you may come across when using or developing within an SAP system. See below for the standard details explaining what it means and how you can avoid or fix this runtime error.

Short Dump Classification: K - No Error

You can view further information about a runtme error by using transaction code ST22 which will show you this and all runtime erros that have happen in your SAP system.

Also check out the Comments section below to view or add related contributions and example screen shots.

DEBUGGING_IMPOSSIBLE ABAP Runtime Error

There is no error that can be corrected. The debugging of ABAP programs is currently not available. Try using the ABAP Debugger again later. The work process might be able to switch to debugging mode then.

The process overview shows you which processes are currently in debugging mode.
No more than half of all dialog work processes can be in debugging mode at any time. Please see none error for more details about the possible cause of this runtime error and how it could be avoided.

This runtime error can occur in certain situations. Therefore, further analysis is not necessary.

Dialog work processes working in debugging mode are assigned exclusively to a single user; this protects the user context from any process changes. However, user contexts are usually rolled out of the old workprocess when the system is waiting for user input, and prepared to be rolled into a new work process. This makes a COMMIT WORK necessary.

Work processes in debugging mode cannot be used by other users. The number of free work processes is therefore reduced, and this can affect system performance. For this reason, each system has a maximum number of work processes that may be in debugging mode at any one time.

If this runtime error occurs very often, you should check why there are so many dialog work processes in debugging mode in this system. You attempted to call the currently running program in the ABAP Debugger (for example, by using a BREAK-POINT statement).

Since you are in a production system or client (table T000), it is only possible to call the ABAP Debugger if the work process can switch to debugging mode.

Since the maximum number of work processes in debugging mode has already been reached, debugging is not currently possible.