RFC exceptions

With external function calls, the EXCEPTIONS addition of the CALL FUNCTION command can be used to assign return values to the exceptions defined in the interface of the called function module. Class-based exceptions cannot be propagated to the caller from a remotely-called function module, and have the effect of an exception that cannot be handled.

As well as the exceptions defined in the interface of the called function module, an external function call can also have the following predefined exceptions:

• The SYSTEM_FAILURE exception is the response to a runtime error that occurs when the remotely-called function module is executed.

• The COMMUNICATION_FAILURE exception occurs when the connection to the partner system cannot be established or if the connection is lost during communication.

Note

We strongly recommend that you assign a return value to both these exceptions for every RFC, and that you handle this return value, as otherwise a runtime error will occur in the exception situations in question.