Which signature elements may an instance constructor have?

In the context of instance constructors in ABAP, signature elements play a crucial role in defining the behavior and usability of the constructor. Instance constructors can include parameters that influence how the object is instantiated.

When discussing the elements that may be part of an instance constructor's signature, exceptions are significant because they allow developers to handle error conditions that may arise during object instantiation. This means that when something goes wrong within the constructor, it is possible to raise an exception that can be caught elsewhere in the program, thereby enhancing the robustness of the object-oriented design.

Exporting parameters also have relevance in constructors. These parameters allow values to be passed back from the constructor to the caller, which can be useful in scenarios where the constructor needs to initialize properties or return specific configuration settings relevant to the newly created object.

Thus, the inclusion of both exceptions and exporting parameters in the instance constructor's signature is valid and aligns with best practices in ABAP object-oriented programming. This combination supports error handling and data retrieval methods that enhance the functionality and robustness of the class being constructed.